Most of ppl who are telling 'relaxation' stories have no idea what they are talking about. They develop sloppy, weak body, horrible posture and very poor techniques and you can see it on their videos. So forget about relaxation, develop strong power of techniques.
I really enjoy the sweeping generalisations that I read here on AW.
IMVHO - Real power of technique comes from relaxation,
I do agree however, that sloppy body, horrible posture and poor technique are to be avoided, but they are not the result of 'relaxation', they are the result of poor teaching.