When you jump from an elevated position you usually bend your knees upon reaching the ground, which makes the time of the contact about 10 times that of a stiff-legged landing. In this way the average force your body experiences is

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Bending your knees increases the time over which the impact occurs, reducing the average force experienced by your body to about 1/10 of what it would be with a stiff-legged landing.

When You Jump from an Elevated Position You Usually Bend