The Activbody Activ5 is a portable fitness device that helps track your progress with isometric workouts. With HealthKit integration and a companion Watch app in mind, Apple is now selling the accessory at its US retail and online stores.
Unlike a typical workout like running or weightlifting, isometric sets are static — you don’t move. They involve applying pressure against your own body, holding the position and maintaining the intensity of your strength pushing against yourself.
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