Heinz Senior is an accomplished IFBB Professional bodybuilder aswell as highly sought after personal trainer who has used and openly endorses Syntherol as the best and only Site Enhancing Oil. Here is one of his clients who used Syntherol in his preparation for a competition. Not only did he get leaner his arms actually got bigger by the end of his diet!

You can see what Heinz and others said about this client here:

http://www.professionalmuscle.com/forums/members-logs/54777-syntherol-exellent-results-confirmed-again.html