
Not at all. Avg test levels for adult men are between 400 and 1200 ng/dl, and this range makes very little difference in how much muscle one can build naturally. You only see crazy results upwards of 2000 ng/dl. Adding 100 or 200 to your base test isn’t going to make hardly any difference
Definitely wouldn’t be “completely” safe, still dealing with needles and injecting hormones into your body, and again, you probably wouldn’t even be able to notice a difference. Like #1 said, higher test levels only make a difference if they are WAY higher than natty test levels. This is just generally such a terrible idea. Medium risk for no reward. Either hop on or stay natty.
Introducing exogenous testosterone will suppress and lower your endogenous no matter the dose, and also wouldn’t it actually be worse since he wouldn’t even be at a testosterone replacement level, just basically giving himself low testosterone levels due to how little exogenous he’s introducing?