i tried this one time at a Newman Outfitters ( if i remember right ) , a female friend of mine (later my wife / exwife ..lol) at the time wanted to look for a winter coat .. we saw someone climbing the rock wall and i opened my mouth and said that cant be that hard !! well the lady working the wall said bet you cant do it , i said probably not but after some name calling to me by my female friend i was more then eager to prove them both wrong ... well i made it to the top !!!! being that my friend barely new me that well and the lady at the wall had no clue that i climbed trees for 7 years and been through classes to be a tree climbing instructor ..lol.. but i will admit that i went up the easy side and still struggled , climbing anything on a regular basis you find you have muscles that you never lnew you had ... that was 12years ago and 30 pounds lighter ...lol