I used to dread gym time—then I tried the workout A-list celebs are obsessed with: Pilates. Thirty days left my abs tighter ...

Lengthened Partials: Recent research has shown that partial reps performed in the bottom half of an exercise—when the muscle ...

Sit on the cable row machine, place your feet on the platform, and bend your knees slightly. Grab the handle with both hands and sit up tall, keeping your chest up and shoulders back. Pull the handle ...

With David’s help, I tried training like Harry Styles for a day last year, completing a session similar to the one above.