I am 43, and still very active in competitive sports. I started my first cycle @ the advice of a friend about 2 years ago. I did test enanthate for 8 weeks @ 300mgs per week, to boost sport performance & physique, worked well. I did no pct, but had minor side effects ( light acne ). About 6 months later, I started a sust/deca cycle @ 300mgs each per week for 8 weeks. I had some acne, & nads shrunk, but no sexual effects. Again no pct. Everything returned to normal within a few weeks after ending cycle. I retained about 50 % of my gains and strength. I did keep up nutrition and workout schedule after cycle. I waited about 9 months and started another sust/deca cycle, sust 450mgs per week - deca 300mgs per week, I stopped deca and started Tren enanthate @400 mgs per week @ 7 weeks and would like to continue this along with sust for another 5 weeks, I've had great results with slight side effects ( acne, nad shrinkage, and slightly sore nips ) I talked to another friend & he highly recommended pct & gave me this site for reference. I have been researching and am slightly confused. I now know I should never have started cycle without pct in hand. Any advice on cycle and pct, & if arimidex is appropriate @ this time.