A upper arms exercise targeting the biceps.

Clasp your hands behind your back with your palms together, straighten arms and then rotate them so your palms face downward.
Raise your arms up and hold until you feel a stretch in your biceps.
Primary (target)
Secondary
Log your sets and the app does the rest — automatic PR detection, progression charts for every lift, and progressive overload that adjusts your next workout. Paired with AI nutrition coaching so your training and your plate pull in the same direction.
Planning your next heavy session? Estimate your max with the One Rep Max Calculator and build up to it with the Warm-up Calculator. More free tools →