TMI, Apple Watch! Why you don’t really need all that data.

Not all data is good or helpful, doctors, exercise physiologists and coaches say, and having more data does not mean having a more effective workout. The real questions surround not the wearable, but the wearer. — Liam Eisenberg/The New York Times

Over the past few years, upping your exercise game has started to feel like getting a degree in data science.

There are glucose monitors and sweat patches, sleep trackers and step trackers, heart rate monitors and cadence sensors. There are watches and rings and armbands and chest straps and clip-on monitors that promise to estimate your VO2 max, your breathing and more.