Yeah honestly...look at today's top male performers 3/4 of them are on some sort of enhancing substance, in terms of it decreasing load size or size of Your manhood or keeping an erection...do some research, testosterone is a male sex hormone which in abundance could only cause the opposite effects all 3 of these(thats why every over the counter male enhancement product put stuff in them to raise test levels such as tribulus)....You can thank Me later for this period of instruction biatches