
isometric wrist flexion performed against self-resistance in sitting position with forearm supported on thigh
Sit and rest the forearm on the thigh with hands off the thigh palm facing towards the ceiling, make a fist and move towards the ceiling. Place another hand on the top of the fist, further move the hand towards the ceiling against the resistance of other hand. release the resistance and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.