I too agree with everyone else, 20 is very young to hop on. What will benefit you the most would be to take lifting seriously and educate yourself on nutrition (getting your macros and calories on spot consistently). How weight bearing exercises effect human physiology and also proper form for all the exercises you perform. Also if you ever injure yourself or perform a rep and you feel a pain that's not just muscle burn, knowing when to stop and not push yourself. I know a lot of guys that hurt themselves from pushing it too hard and had to take time off of lifting in the end. If you're serious lifting will be apart of you for the rest of your life and you want to think about longevity instead of instant results. Doing all this for 5-10 years will truly transform your body and mind, and by then you'll know so much more than you do now and when you run a cycle you will unlock the full potential of that cycle.

I hope you and the weights become good friends because the gym helps so much more than how you look. You will probably make great friends (true gym rats are the best friends) and also lifting can have almost like a meditative affect that is so good for your mind.

20 years old. I'd wait and educate myself on everything steroid possible like I still do to this day, 10+ years later. If like myself you have a natural thirst for roid knowledge then it'll come easy to learn and absorb the info. Putting you in a good place for when you do start, you won't have to ask questions, you'll know yourself what does what etc etc.

The question you ask about ugl and its link to acne and estro sides doesn't actually make any sense, I think I know what you actually meant but this is my point about educating ones self.
Wait and see what a dedicated and consistent diet and training plan can do for a natty trainer. Cos I'm sure like most of us, the odd meal is missed, couple of late nights here and their, going out you are 20 after all. But if there are things you can tighten up, you will be surprised of the benefits it could bring.
It's not never, it's just waiting for a more optimal age safe time of your life.
Hey, at least you where honest about your age.

Wait 5 more years minimum. Shit your brain isn't fully developed until around 25 years of age. In the meantime push yourself to your genetic limit and do a shit ton of research. Don't take this advice lightly. I doubt you'll listen. Expect to get banned lolololol

1. There is no such thing as a safe UGL.
2. See number 1.

First off 20 is too young to be on this site. You will have the same exact side effects across the board wether it be pharmaceutical or ugl. Test is test it’s not like growth hormone where there is a noticeable difference between pharma grade and generic. You’re young don’t go messing up your hormones most guys would kill to have high natural test levels.