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  <url>
    <loc>https://mach1-performance.com/mach1-blog</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2026-06-25</lastmod>
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  <url>
    <loc>https://mach1-performance.com/mach1-blog/how-altitude-affects-cycling-performance</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-06-24</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/209fe9f8-0f8f-431b-baa6-45bdc9a11d12/Bighorn+Gravel+Elevation+Profile+Strava</image:loc>
      <image:title>Mach1 Blog - When Altitude Collects the Bill - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/4fa4c4a2-95a5-431e-956f-135a26397e9a/Gypsum+Colorado+View</image:loc>
      <image:title>Mach1 Blog - When Altitude Collects the Bill</image:title>
      <image:caption>One of the biggest misconceptions about altitude is that it only affects you when you get really high. In reality, the effects start much lower than most athletes realize. Research shows aerobic performance begins declining around 5,000 feet, with VO₂max decreasing approximately 1-2% for every additional 1,000 feet of elevation gain above that point. By the time we reached the summit of Hat Creek, we were more than 6,000 feet above that threshold. The interesting thing is that the climb itself wasn't necessarily what made the race hard. The climb simply exposed everything that happened beforehand.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/edc08933-87c5-466a-93ad-8ecf79f164b9/Trainingpeaks+data+from+race</image:loc>
      <image:title>Mach1 Blog - When Altitude Collects the Bill - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/a6c24e3b-a8d1-4642-b28e-523b4ae18820/Gravel+Riding+In+Gypsum+Colorado</image:loc>
      <image:title>Mach1 Blog - When Altitude Collects the Bill</image:title>
      <image:caption>That means: Faster glycogen utilization Higher lactate production Greater sympathetic nervous system activation Slower recovery between efforts The result? You can feel completely fine while quietly spending energy at a much faster rate than you realize.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/b47710c9-2249-4185-a1d4-e00b2ea51713/TableAltitude.jpeg</image:loc>
      <image:title>Mach1 Blog - When Altitude Collects the Bill - Make it stand out</image:title>
      <image:caption>The following equations — generated from a study conducted on four groups of highly trained or elite runners — can be used to estimate aerobic power at a given altitude as a percentage (y) of what is normally available at sea level, where x = elevation above sea level in km. for acclimatized athletes (several weeks at altitude): y = -1.12×2 – 1.90x + 99.9 (R2 = 0.973) non-acclimatized athletes (1-7 days at altitude): y = 0.178×3 – 1.43×2 – 4.07x + 100 (R2 = 0.974) Another study created the following equation. y = -0.003×3 + 0.0081×2 – 0.0381x + 1 Source: https://www.trainingpeaks.com/blog/the-effect-of-racing-at-altitude/</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/c85ae8cf-6dac-4c2b-b758-eef8269ffe89/IMG20260620143233%7E2.jpg</image:loc>
      <image:title>Mach1 Blog - When Altitude Collects the Bill</image:title>
      <image:caption>If you're racing at altitude, the biggest mistake you can make is pacing for sea level. The athletes who perform best aren't necessarily the strongest. They're usually the ones who: Stay patient during the opening hour Avoid unnecessary surges Respect the cost of repeated accelerations Start fueling early Accept that sustainable power will be lower than normal Because altitude isn't just a fitness test. It's an energy management test!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/cycling-race-strategy-drafting</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-06-25</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/0bcfcd5a-fe85-4b33-b94d-ed7afa279703/unnamed.jpg</image:loc>
      <image:title>Mach1 Blog - Stop Wasting Matches: The Art of Free Speed</image:title>
      <image:caption>One of the biggest misconceptions about altitude is that it only affects you when you get really high. In reality, the effects start much lower than most athletes realize. Research shows aerobic performance begins declining around 5,000 feet, with VO₂max decreasing approximately 1-2% for every additional 1,000 feet of elevation gain above that point. By the time we reached the summit of Hat Creek, we were more than 6,000 feet above that threshold. The interesting thing is that the climb itself wasn't necessarily what made the race hard. The climb simply exposed everything that happened beforehand.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/6660fa44-f239-4c9c-badf-ca2f53ef1ca3/unnamed.png</image:loc>
      <image:title>Mach1 Blog - Stop Wasting Matches: The Art of Free Speed</image:title>
      <image:caption>Let's put that into cycling terms. Imagine you're riding at 250 watts. A 30% drafting benefit means your body may only need to produce the equivalent stress of roughly 175 watts to maintain the same speed. That's a difference of 75 watts!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/a9a579e5-0b48-4727-9094-3c9d6e17c576/unnamed+%281%29.jpg</image:loc>
      <image:title>Mach1 Blog - Stop Wasting Matches: The Art of Free Speed</image:title>
      <image:caption>The key lesson: If moving up feels like a maximal effort every time... You're probably doing it wrong.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/unbound-gravel-fueling-hydration-guide</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-06-24</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/a0173a8e-9cb2-4588-a6f5-339dd9d922e0/unnamed.png</image:loc>
      <image:title>Mach1 Blog - Fueling Unbound…The adversity that our guts endured - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/160f5cb7-1dd4-483a-bd03-2e4b84f661eb/brooke6.jpg</image:loc>
      <image:title>Mach1 Blog - Fueling Unbound…The adversity that our guts endured</image:title>
      <image:caption>Brooke Darby is a Precision Nutrition Level 1 Certified Nutrition Coach and current Nutrition student at Fort Lewis College. She is now accepting 1:1 nutrition clients through Mach1 Performance. If you'd like help improving your fueling, recovery, race-day nutrition, or overall performance, reach out directly at: brdarbybrooke@gmail.com</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/automaticity-in-cycling</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-06-24</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/how-to-race-in-extreme-heat</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/cycling-weight-loss-fueling</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/ketones-for-cyclists-research</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/66c375c4-6e50-42f5-a313-0c93a27ae2c7/ketones.webp</image:loc>
      <image:title>Mach1 Blog - Ketones: they’re everywhere</image:title>
      <image:caption>Ketone esters — stronger, more effective at raising blood βHB Ketone salts — easier to produce but less potent and sometimes with poor bioavailability</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/25db324c-ed86-4ae6-a8c3-1b5014cf3f62/Screenshot%2B2026-02-24%2B9.43.16%2BAM.webp</image:loc>
      <image:title>Mach1 Blog - Ketones: they’re everywhere - Make it stand out</image:title>
      <image:caption>https://www.sciencedirect.com/science/article/pii/S2161831322001855?via%3Dihub</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/d62cd7ed-2679-482a-a251-a21e2f2e6393/Screenshot%2B2026-02-24%2B9.45.49%2BAM.webp</image:loc>
      <image:title>Mach1 Blog - Ketones: they’re everywhere - Make it stand out</image:title>
      <image:caption>https://journals.humankinetics.com/view/journals/ijsnem/32/3/article-p214.xml</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/c74e4e28-981d-457d-be07-f4c0a6331104/Screenshot%2B2026-02-24%2B9.48.35%2BAM.webp</image:loc>
      <image:title>Mach1 Blog - Ketones: they’re everywhere - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/best-supplements-for-cyclists</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/1ae86b71-1126-4040-916e-121a7a360605/beta+alanine+supplement.webp</image:loc>
      <image:title>Mach1 Blog - supplements that rack up the bill — Worth It? - Make it stand out</image:title>
      <image:caption>Beta Alanine Supplement</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/f5eab046-3af0-4bb1-aa14-f99876135492/Tongkat+Ali+supplement.webp</image:loc>
      <image:title>Mach1 Blog - supplements that rack up the bill — Worth It? - Make it stand out</image:title>
      <image:caption>Tongkat Ali supplement</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/71cc4dc4-883d-48d8-a828-90485becd77a/Beetroot+Nitrate+Supplements.webp</image:loc>
      <image:title>Mach1 Blog - supplements that rack up the bill — Worth It? - Make it stand out</image:title>
      <image:caption>Beetroot Nitrate Supplements</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/73acb267-a6f7-4e65-b697-bf9e234e4374/sodium+bicarbonate.webp</image:loc>
      <image:title>Mach1 Blog - supplements that rack up the bill — Worth It? - Make it stand out</image:title>
      <image:caption>Sodium Bicarbonate Supplement</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/7dbb6566-2b0b-4d83-b6f5-ff8c812a5e39/collagen+complexes+supplements.webp</image:loc>
      <image:title>Mach1 Blog - supplements that rack up the bill — Worth It? - Make it stand out</image:title>
      <image:caption>collagen complexes supplements</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/1eda9aba-8840-48c9-9326-aba020cd6291/protein+powder+supplements.webp</image:loc>
      <image:title>Mach1 Blog - supplements that rack up the bill — Worth It? - Make it stand out</image:title>
      <image:caption>protein powder supplements</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/cycling-recovery-tech-review</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/ac005fb3-32b1-4b5d-ad64-1e27a68e03d1/Hyperice_Normatec3_WEB-7164.webp</image:loc>
      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>HYPERICE Normatec Boots Leg Compression Recovery System Cyclists</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/e6cbf9f9-8401-442b-a91d-4095a3fa4390/nix+flowbio+sweat+testing+sensor.webp</image:loc>
      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>nix flowbio sweat testing sensor</image:caption>
    </image:image>
    <image:image>
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      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>Giordana cycling bib shorts</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/abc44dd5-c5e4-4d85-b7a7-d7babcaa2b77/Garmin+varia+tail+light.webp</image:loc>
      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>Garmin Varia tail light cycling</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/4cb354df-20ac-4e92-b8cc-3a92e50f0e14/testing-lactate1-1024x768.webp</image:loc>
      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>Lactate Testing Meter Strip</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/ff5acd9a-7f1f-4353-9993-bd13baef6f0f/female-sports-massage-therapist-hard-at-work-667370730-5a74a622a18d9e00363112ef.webp</image:loc>
      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>Sports Massage Therapy</image:caption>
    </image:image>
    <image:image>
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      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>Bicycle Chain Lubricant</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/7cc4564c-f912-4ae3-9066-54f05107e62a/altitude+hypoxic+tent+for+sleep.webp</image:loc>
      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>altitude hypoxic tent for sleep</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/4c6385d4-088c-43c0-9701-5c4c5471418c/ceramic+bearings+cycling.webp</image:loc>
      <image:title>Mach1 Blog - I See Cyclists Spend Thousands on These Things — Are They Worth It? - Make it stand out</image:title>
      <image:caption>ceramic bearings cycling</image:caption>
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  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/science-of-self-belief-endurance-sports</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/stretch-mediated-hypertrophy-explained</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/03f88857-6b3a-4585-8588-ffb1f4fae1fc/Bigger%2Bstretch.webp</image:loc>
      <image:title>Mach1 Blog - Is the Stretch Really Where All the Gains Happen? - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/cycling-indoor-training-zones</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/single-leg-strength-training-for-cyclists</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/what-consistency-really-means-for-athletes</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/winter-motivation-training-for-cyclists</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/strength-training-for-cyclists-off-season</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/off-season-training-for-cyclists</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/magnesium-for-cyclists</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/late-season-fatigue-cyclists</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
  </url>
  <url>
    <loc>https://mach1-performance.com/mach1-blog/you-get-faster-from-recovery</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-05-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/52eae97b-80c8-4b5c-b7de-a9e17ca40f87/Screenshot%2B2025-09-10%2B12.38.35%2BPM.webp</image:loc>
      <image:title>Mach1 Blog - You Don’t Get Faster From Training — You Get Faster From Recovery - Make it stand out</image:title>
      <image:caption>The basic process looks like this: Training creates stress and fatigue Performance temporarily drops Recovery allows adaptation The body rebounds stronger than before</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/4183cd33-42ea-4bc7-b058-ad19d6f6aeb8/Screenshot%2B2025-09-10%2B12.39.49%2BPM.webp</image:loc>
      <image:title>Mach1 Blog - You Don’t Get Faster From Training — You Get Faster From Recovery - Make it stand out</image:title>
      <image:caption>Roston used an example of a massive 8-hour, 547 TSS ride to make an important point: Adding more tempo or more intervals is not automatically the smartest progression.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/8d9943bd-b3dc-4caf-a063-76a95701203f/Screenshot%2B2025-09-10%2B12.49.44%2BPM.webp</image:loc>
      <image:title>Mach1 Blog - You Don’t Get Faster From Training — You Get Faster From Recovery - Make it stand out</image:title>
      <image:caption>The Law of Diminishing Returns</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/665cf710c82c16049caa4ce1/8022816f-f370-4492-a72c-316cc99874e2/DSC_0384.webp</image:loc>
      <image:title>Mach1 Blog - You Don’t Get Faster From Training — You Get Faster From Recovery - This article was written by Mach1 Performance Devo rider and assistant coach Roston Nordell.</image:title>
      <image:caption>Want to start training with intention and strategy? Let’s talk.</image:caption>
    </image:image>
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      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
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      <image:caption>Want to start training with intention and strategy? Let’s talk.</image:caption>
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      <image:caption>Sit on a piece of corrugated cardboard placed on a hard chair. Lean slightly forward in a cycling posture. Stand up and locate the two deepest impressions. Measure the center-to-center distance in millimeters. Add 20–30mm to find your ideal saddle width.</image:caption>
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      <image:caption>Want to start training with intention and strategy? Let’s talk.</image:caption>
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