When you are putting, make sure that your lower body, from the waist down, doesn’t move. If it does move, this will introduce a potential source of error which you do not need when putting.
Moving your legs and hips may work wonders at a disco, but not on the green when you are putting!
franklygolf 
Excellent advice from the Master. The fewer moving parts, the better, other than the arms obviously.
Thumbs up!