Getting an Oura ring improved my sleep and exercise

According to LessWrong contributor Daniel Tan, a month wearing the Oura ring—a wearable that tracks sleep, activity, and cardiovascular health—fundamentally changed his approach to fitness and rest. Simply seeing his metrics motivated behavioral change without relying on willpower. Tan's sleep score improved from the sixties to the eighties; his daily activity naturally increased to the thirty-five hundred to four thousand calorie range he could then plan around. The ring uses sensors that measure blood flow to estimate heart rate, sleep architecture, and arterial elasticity. At a few hundred pounds upfront plus six pounds monthly for the app, Tan considers it money well spent—and notes the newly released ring five offers thinner design and a week of battery life.

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