I know a lot of guys say a 10 week cycle is good, others do 12-15 week cycles, and others go year round. Planning out my summer cycle, and was wondering what people thought of 15 week cycles. Any 10 week cycle I did, I didn't notice anything for 4-5 weeks, except when I threw d-bols in the beginning. Is 15 weeks too much for receptors? I haven't decided what types I'm gonna use, but have access to Prolines stuff, d's, and omnas. So, 10 weeks, 15, or something else, what's your opinion?