Some Work, All Play 294. The Bicarb Revolution, Theory of Doubles, Vitamin D Supplementation, Stairmill Training, and Zone 2 Weirdness!
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Jan 20, 2026 Dive into the intriguing world of sodium bicarbonate and its potential performance benefits based on a new study at altitude! Discover how Vitamin D deficiencies affect athletes and the importance of supplementation. Uncover the latest insights on trail shoe performance and the power of doubles training. Get tips on stairmill workouts and the role of heart rate zones. Plus, some fun twists on race strategies and a bit of art inspiration to boost your mindset. It's a treasure trove of knowledge and practicality for athletes!
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David's Vitamin D Source Story
- David stopped certain liquid vitamin D sources after PVCs and switched brands, which resolved symptoms.
- After switching, he reports higher winter energy and credits vitamin D among factors aiding recovery.
Check And Supplement Vitamin D
- Get blood tests and supplement vitamin D if low, especially in winter or at northern latitudes.
- Aim for athlete levels above ~50 ng/mL and consider ~5,000 IU/day until you confirm levels with bloodwork.
Use An Armband HR Monitor
- Use an armband heart-rate monitor (e.g., Coros) instead of wrist-based optical HR for accurate running and cycling HR.
- Pair the armband with your watch to get reliable training data and zones.
