To stretch your gastrocnemius calf muscle, place your foot against the wall. Use your hands for support. Your opposite leg can be slightly bent. Imagine a nice straight line through the leg being stretched. This will produce an even tension and stretch, through your leg. This stretch sensation should be light to moderate. Breathe and relax into this, and hold for 45 to 90 seconds. You should now feel a nice release through your gastrocnemius calf muscle.