Thank you for getting back to me. I'm an athlete, 56 years old and I have been weightlifting and running most of my life. I weight 165 lbs. I did a couple of cycles 20 years ago peaking at about 200 lbs but got cysts under my nipples, had them removed and haven't touched anything since then. Now I'm competing in numerous races including triathlons. I weight lift 3 times a week and run 3 to 4 times alternating days. I just want to keep my upper body muscle and get stronger so I can swim, bike and run faster. I started using Andro Gel 1% 3 months ago and have realized nice strength gains and a little size with it. I'm extremely cut from the decades of work but without a little help, being 56 I noticed I was progressively loosing muscle. Now I'm getting greedy with the Primo. Well I don't want to hamper running so I think I'll leave the quads alone but the gluts seem like the place to go. Your experience has been very helpful. Thank you. I was beginning to think I got some bad Primo.