Science
HRV: what it actually tells you
Heart-rate variability is the most over-explained and under-understood metric in wearables. A practical primer.
Marcus VidalApril 28, 2026 · 8 min
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Training
The rest day that makes PRs
Progress is built in recovery, not in the session. How to schedule rest like the adaptation engine it is.
Coach RamosApril 9, 2026 · 5 min
Science
Sleep consistency: the quiet superpower
Total hours get all the attention, but when you sleep may matter just as much as how long.
Dr. Lena HartMarch 22, 2026 · 7 min
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