It will build lean muscle, and athletic ability a person will be just as strong not really stronger then if most likely lifting weight loads. It was too windy to land the troops, except for one luckless fellow who had been the first to descend, without his rifle. http://cgi.www5a.biglobe.ne.jp/~luz_dark/cgi-bin/jawanote/jawanote.cgi?ectrans=1