A Rhythmic exercise ...when given under guidance of Physiotherapist or rehabilitation specialist works like medicine ...in fact major movement disability is cured by movement therapy as part of physiotherapy... like medicine cure diseases..Rhythmic movement cure movement restriction, weakness and other locomotor disabilities. Rhythmic means the movement is smooth...load On muscles Should be smooth and consistence and in a best appropriate way. Under regular bushing Type Pulley though angular motion can be achieved ..it is not best one. because in normal bushing type along with rotation pulley wheel makes transition movement around axis. so certain changes in angle of movement happens..and resistance or load apply to joint and muscles also not in consistence throughout exercises. In bearing Type movement is occur between two pulley parts with less friction by metal balls inside. like fan, 2 wheeler wheels, and other appliances this movement is consistently smooth , load is consistence. and when appropriate exercise as advice by physiotherapist done results can be excellence.