<s>[INST] I just wanted to start skipping rope as an work out.But when I just started it my back started to ache so badly that I couldnot stand even.Is this common or do I need to change anytyhing.I have been not working out since along time.And I wanted to start now. [/INST] Hi, To start with any exercise there will be some strain of muscles initially. But after some time your muscles will accustom to this type of exercise and there will not be any problem. Start with low intensity and gradually increase the time. Go for worm up exercise before starting real exercise. Go for regular and daily exercise, gap for few days might give rise this problem again initially. Ok and take care. </s>