No the only sides I ever see are water retention and estrogen related fat increase. I have never gotten acne, gyno, hairloss, ect. I like short cycles because the way my body responds I start growing fast for like three weeks, than plateau. I might as well get out refreshed and back in fast to hit that initial growth again. No reason to have a long window of opprorunity to get bad sides and worn out receptors. Also I love just being of for 4-8 weeks vs 12.