Inside Apple’s Health Lab →

Ben Court got an inside look at Apple’s lab focused on measuring human performance during workouts:

Located on a side street in Cupertino—a few miles from Apple’s shiny new headquarters—the single-story building these Apple workers are entering looks like any anonymous suburban office block. Inside, once I clear security and get buzzed past a solid white door, I enter an invite-only secret exercise lab. On a recent morning, about 40 employees are sweating away on different contraptions—rowers, treadmills, cable machines—as 13 exercise physiologists and 29 nurses and medics monitor data. Many of the exercisers are hooked up to a metabolic cart and ECG and are wearing a $40,000 mask apparatus that analyzes their calorie burn, oxygen consumption, and VO2 max.

Down one hall there’s a studio for group fitness; behind another white door an endless pool; and over there, three chambers where temperatures can be set to mimic Arctic conditions (subfreezing) to Saharan heat (100°F-plus). At Apple every room has a name, and these climate-controlled chambers are called Higher, Faster, and Stronger.