to flex the forearm at the elbow, you use the biceps brachii, brachialis, and brachioradial (to a lesser extent). to supinate the forearm, you use the biceps brachii and the supinator...
Biceps Brachii
Biceps brachii
Triceps and Biceps
brachialis
Pilates Supine Position
EP 113: Obliques Roll Back with Small Ball (Pilates on Fifth Video Podca...
Hand Grip Training - Working The Forearm Extensors
Palms-out Forearm Stretch Exercise