Calf training is most commonly forgotten. Although not the most complex muscle group to train, working them properly is crucial to overall balance and stability. Although there are multiple exercises to work your calves, the movement patterns are all the same.
This movement can be done sitting or standing, depending on which calf muscle you are aiming to isolate. Begin this movement with your feet flat on the floor, either holding weight or using body weight only. Then squeeze your calves to lift your heel of the ground. End the motion when you feel the hardest calf contraction. Also, try the single leg variation to add a challenge and work on balance.