Could I have added inches to my vertical jump without the $100 jump sole? Sure, all I needed was some personal trainer Allentown PA and strength training that I could have easily done at my school weight room. But did I have the knowledge to actually make it happen? No. You need Gyms in Yorba Linda. Was it hard for a 15 year old boy going through a growth spurt to give up lunch and save the money instead? Of course it was, but I wanted to make the Varsity team THAT much. And it absolutely helped by CrossFit-Pittsburgh. Because I had to make a substantial investment, I made sure I followed the instructions and get the most benefit out of it.