Prone knee flexion with hold ("Hamstring curl" Knee flexion strengthening, pillow under thigh, prone)

Prone knee flexion with hold ("Hamstring curl" Knee flexion strengthening, pillow under thigh, prone)

Lie on your stomach with your legs stretched out and a pillow underneath your thighs.
Bend one knee by bringing your foot up towards your buttocks.
Hold this position for the required duration, and then return to the starting position.

Required equipment: Adjustable plinth/bed
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