I would strongly advise you not to stay "on" for a year straight. However, it does't matter what I say, your going to do it anyway. That being said, keep an eye on your blood work.
Why would you strongly advice it? Any reason ?
Im not sure yet, thats why I ask for some advice and experiences
Because you are young to go that road, this is only your 2nd cycle and you have a lot to experiment with. There are many reasons, but i don't think any of that is going to convince you
If you've decided then do it, but trust me, there are lots of reasons not to do it.
Stay safe.
Why would you strongly advice it? Any reason ?
Im not sure yet, thats why I ask for some advice and experiences
Why don't you train hard and learn as much as possible about eating a healthy diet. Everyone seems to be looking for shortcuts. Your 21...your hormones should be primed just right to pack on good solid muscle. If you stay on for long periods of time, you don't want to be TRT at 21. As you get older, your beliefs and priorities will change.
How long have you been training?
If your going to run a cycle, then run it for 12 wks and another 12 weeks off to recover.