Slowly do the movement of sitting down in a chair with your heels well implanted on the floor, your back nice and straight without leaning forward too much.
Slowly go back to an upright position. Start again 15 times.
The ideal? After just a few weeks, switch to the « Squat jump ». Punctuate each movement of imaginary chair with a jump arms up towards the sky to increase the vascular frequency. It elongates muscles.
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