What’s the role of a simple fitness band in the AI health era?

Fitness bands can’t be as simple as they once were before the AI health boom. | Photo by Amelia Holowaty Krales / The Verge This is Optimizer , a weekly newsletter sent every Friday from Verge senior reviewer Victoria Song that dissects and discusses the latest gizmos and potions that swear they're going to change your life. A fitness band is for bettering yourself, but casually.