From your post, I'm assuming you're a young guy as well. Believe me bro... you don't want to follow in those other guys footsteps.
Lets break it down simply. There are parts of your brain that do not finish developing until around age 25. Your HPTA and Endocrine systems are still developing. When you introduce exogenous hormones (aas) into your body during this development phase, what does your body do? It shuts down its development. Not good at all. Think about it like this, your body always strives for homeostasis so if it sees high levels of test, its going to say "woah, I have way too much test, time to shut down because theres no way I need more". There lies the issue.. You not only shut down your natural hormone production but you shut it down when its still in a crucial developing phase. PCT (post cycle therapy) is not a "certain" thing. No one is garunteed recovery. So for a young guy who shuts himself down early during this development phase... what does that mean? It means hes risking permanant shutdown, premature andropause, etc and that can lead to many health issues. Imagine being 21 in college and not being able to get your dick up.. Not cool at all.
At those young ages, your natural test levels are booming. There is no need for steroids at all. All thats needed is a solid training and nutrition setup and dedication/consistency. Those 18-20 year olds that you see running these reckless cycles are going to feel it later in life. Be smart and don't be one of them bud. Train hard, eat smart, and study aas so that when the day comes and you want to run your first cycle, you can do so properly.
Sent from my SM-G900P