i do this one from time to time,standing calve raise find comfortable wght cause this hurt's,10 reps 5 sec stretch,15 reps 10 sec stretch,15 reps same 10 sec,25 reps same rest,15 same rest,then ten reps,3 times around after each 75 rep set rest min or so then sequence again,225 reps in about 4 or 5 min that's it for that day cause it hurt's for day's.