if u want to look relaxed on sp replays, choose a frame rate, like 20 frames, or 40 frames etc (i'll call it X), depending on how much u'd like too look relaxed, and relax all the joints every X frames, then watch what ur tori and put only the forces u need to make him move the way u want, like sahee said.
In ur replay u leave some useless force applied, like elbows and knees after the hit.