Prone hamstring curl with ball ("Hamstring curl" Knee flexion strengthening, with ball, prone)

Prone hamstring curl with ball ("Hamstring curl" Knee flexion strengthening, with ball, prone)

Lie on your front with a ball between your ankles.
Steadily bend both knee, lifting the ball up and towards your buttocks.
Control the movement as you slowly lower the ball back down to the floor.

Required equipment: Mat, Ball - small
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