Double Leg To Single Leg Heel Raise Eccentrics Barefoot
How: Get set-up standing by a wall or something that you can use for upper body support for balance. With your feet shoulder width apart and after doming your feet, lift your heels off the ground as high as you can. Without losing height, lift one foot off the ground and slowly lower yourself towards the ground. Then repeat and perform on both sides
Feel: You should feel your feet and calf muscles working with this exercise, especially on the side that maintains contact with the ground. Your hip and thigh muscles will be helping as well.
Compensation: Do not let your knees bend, do not lose your balance, do not rely too much on your upper body if possible, do not lean forward/backward/side-to-side