This article is from the Stretching FAQ, by Brad Appleton Brad_Appleton@ivhs.mot.com with numerous contributions by others.
These include three different stretches performed for the calves,
hamstrings, and inner-thighs, but they are all performed in very similar
positions and I do all three stretches (in the order given) for one leg
before performing them for the other leg. You will need an apparatus for
this stretch: a bench, or a firm bed or couch (or you could use two chairs
with your butt on one chair and the heel of your foot on the other) that is
at least 12 inches off the ground (but not so high that you can't sit on it
with out your knees bent and the sole of your foot solidly on the floor).
The bench should be long enough to accommodate the full length of your leg.
Sit on the bench and have your leg comfortably extended out in front of you
(your heel should still be on the bench) and the other leg hanging out to
the side with the leg bent and the foot flat on the ground.
 
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