Fitness bands like the Apple Watch and the Fitbit aim to track your vitals, like heart rate. But early models weren't all that accurate. "We thought of them a little bit like random number generators.

On May 3, 2025, in Avesta, Sweden, @julialjungqvist shared a video of an unexpected workout fail. In the video, the author is seen putting on a resistance band around her legs and waist when it ...