Originally Posted by a.j.ing

jumpsoles look good for strengthening the calves. i might try them one day. im gonna make my own. they also help stability if u use the proprioceptors. the super secret exercise is only to be done if u are at an advanced level of vertical training and jump and u need to make sure u warm up and cool down properly using the deep heat. they can be very useful if u are advanced and u can gain a few inches in a week using them. but dont become reliant on them. do them say one week every month incorporated in to a jump program. but remember its only if you are advanced