Gastrocnemius stretch

The gastrocnemius muscles are the 2 muscles in the upper calf, just below the back of the knee.

To stretch them, stand 18 to 24 inches away from a wall (facing the wall). Place your hands on the wall at head level. Bend your left knee, and move your right foot about 12 inches backward. Keep your right leg straight, and keep your heel on the floor. Lean into the wall until you feel a stretch in your right calf (this should not hurt). Do not bounce. Hold for a count of 10. Rest. Repeat 10 times with each leg.