just sarted week three, can def notice some strength gains. Last pin was in right quad, which i pulled in baseball at he biginning of season, was a little sore for a few days but back to normal almost. did left quad today, hi a vein twice and then when i was all good my son almost walked in the bathroom on me halfway through inject, fourth time pin was a little dull lol, left quad will be sore for a few days lol. but all in all, goood start so far