Evidence-based guides on health, fitness, and wearable technology. No hype. Just science.
HRV is one of the most powerful — and misunderstood — health metrics. What a "good" HRV actually means.
July 5, 2026 · 8 min readNot all sleep tracking is equal. How modern wearables classify your sleep stages — and why REM and Deep sleep need different algorithms.
June 28, 2026 · 7 min readDisplay nits? Battery days? GPS bands? We cut through marketing to tell you which specs genuinely affect your experience.
June 21, 2026 · 10 min readVO2 max is the closest thing to a "fitness age" number. How your watch estimates it and how to improve yours.
June 14, 2026 · 6 min readWhat 5 ATM vs. 10 ATM actually means for swimmers, divers, and triathletes. We break it down.
June 7, 2026 · 9 min readWrist-based body fat sounds like sci-fi. We compared WHALETECH's BIA against DEXA scans — the results are surprisingly close.
May 30, 2026 · 7 min readWe wore all three for a month. The unbiased breakdown on battery, accuracy, comfort, and which one is right for YOU.
May 22, 2026 · 12 min readYour watch can detect stress before you feel it. The science behind physiological stress measurement and what to do with the data.
May 15, 2026 · 5 min readOne email per week. Evidence-based wearable tech insights. No spam. Unsubscribe anytime.
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