How to get Definition and Size Calf Muscles Soleus & Gastrocnemius raise...

Adjust your clothing so your movements wil be comfortable and hold onto a chair or cabinet for balance. This exercise is best done bare-footed or in flat shoes. 

Stand upright with feet a little less than shoulders apart and toes pointing straight ahead. Start each lift by raising the heels as high of the ground as possible and hold very briefly at the top and then lowering the heels unto the floor. 

Keep your ankles strong during this exercise and raise straight up and down as the calf muscles and ankle respond best this way.

Try and repeat 20 times at a moderate pace, it should take approximately 35 seconds for 20 Calf Raises.

Follow the Calf raise exercise immediately with a Calf stretch to lengthen and loosen the muscles. The Bodyweight Calf raise target the calf muscle which in turn tend to firm up and harden but if you stretch the calf muscles after each exercise this will be avoided.

Calf stretch description: 
Extend your right leg behind you with your toes pointing forward and touching the ground, and press down with your ankle. Hold onto something fixed like a wall or a cabinet, something that you can push back against. Hold the calf stretch for 10 seconds and then repeat with your left leg.