I did my first PS cycle at 16; if I remember right I was 6???3 close to 6???4 and 215-225lbs. It was biotest mag10 at, not as powerful as m1t. I???m not going to stand here and tell you not to do it. At the end you???re the one that???s going to make the final decision no matter what other people tell you. Now the way I did it was running very short cycles. I ran mag10 for two weeks at minimum dosage. Right after that I did two weeks of 6oxo. I probably didn???t need to go that long with 6oxo for such a short cycle but hey I did it. From that time I have done two more cycles and ran all of them for just two weeks, not one more day. Now I???m 17, 18 next month, 6???4, 255lbs and about 17+% BF. If I had been in your shoes I would definitely went for something not as powerful as m1t for the 1st cycle but hey that???s up to you.