'At 7:00 I made a mistake about Eccentric and Concentric. Eccentric - is the lengthening of the muscle. Concentric - is the shortening of this muscle Email for programmes - [email protected] !!!!!!!!!!!!FOR THE NEXT 2 WEEKS!!!!!! £20/€22.50/$28 Nutrition tip sheet £5/$7/€5 Sorry for the delay, here is a video before the Christmas break as I didn\'t record when I was in England.'
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