// Data-Driven Fitness

Using data to help get you in shape

Follow me on my weight loss journey using Whoop and hopefully avoiding GLP-1s

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Apple Just Aimed Straight at WHOOP. I'm Still Not Taking My Band Off.

Series 12, Ultra 4, and watchOS 27 ship Readiness, Health Age, and all-day HRV — WHOOP's feature list. Here's what Apple got right, and four reasons I'm not switching yet.

Rucking: Strength Training Disguised as a Walk

Strength and cardio in a single walk. Start at 10-15% of body weight, add stairs, and log it as a ruck — not a run — or your strain will understate the work.

Hydration, Electrolytes, and HRV

Proper hydration can boost HRV 5-10%. But electrolyte drinks aren't free — sodium intake should scale with your sweat output, not just habit.

WHOOP Should Make a GPS Add-On Module for Runners

No GPS, no pacing — WHOOP has always had a runner problem. Here's a product idea: a snap-on GPS module that attaches the same way the battery pack does.