The Quantified Self 2.0: Wearables Worth Your Wrist
Step counts were the gateway drug. The new generation of wearables tracks what actually changes how you live.
The first wave of wearables told you what you already knew: you sat too much and slept too little. The second wave is genuinely useful - recovery scores that tell you to skip the workout, glucose trends that explain the 3pm crash, sleep staging accurate enough to change your evening routine.
The shift is from counting to coaching. The best devices now close the loop: measure, interpret, prescribe. Your watch notices your resting heart rate creeping up and suggests a deload week before you feel the burnout.
Choose the device you will actually wear. A ring you forget you have on beats a flagship smartwatch charging on your nightstand. Battery life is the killer feature nobody puts on the billboard.
One warning: data is a servant, not a master. The man who checks his readiness score before deciding how he feels has the relationship backwards.
