what is the longest time to go on a tes cycle cyp at 500mg low dose safely i am currently on week 9 and goin to extend it to 15 or 20 maybe but i heard on some other forums people that had extended to a yr or so at this low dossage???? any input is good on people u kno or doctors u talked to would help. Also information about crashing would there be a bigger crash the longer your on the cycle at a low dose like this even with pct or what not???