While it probably isn't the best of ideas for most people, alot of guys stay on year round. I've been on for a year now, but use pretty low doses, and I'm under 30. My advice, think it through. Decide if you really wish to do this, and why, and can live with the consequinces. You'll need to get bloodwork done regularly, and there is always the chance that after a nice 3 or 4 year cycle that your htpa will NEVER recover. At which point you will have to stay on test the rest of your life... well only if you still want to have sex. Can it be done? Certainly, there are bro's who use 3 grams of test a week, year round, who get bigger every year, however odds are there is going to be a price to pay for this somewhere down the line. Like every aspect of using gear. You decide which risks you are willing to take, and if the rewards outweigh the risk. Nobody can answer that question except for you.