Many guys use non-prescription testosterone and other substances to build up their muscles.

The levels of testosterone that some people achieve by doing this can be as high as 10 times the normal level!

Cycling testosterone can turn into a bit of an obsession, and lead to pursuit of higher and higher levels.

That’s right, too much testosterone leads to physical problems. At the end of the cycle you can have a build-up of oestrogen, leading to fluid retention in your face and neck and man boobs.

Some of the stronger horse testosterones on the market can cause serious aggression (so-called “roid rage”) and night sweats.

In the longer term, breast development is a big risk.

By the way, those small balls won’t be producing sperm anymore.

It may be difficult to reverse this effect, so if future fertility is important to you this is something to consider before starting out.

With long-term heavy use of high dose testosterone, your health can be seriously affected, including having a pair of enlarged male breasts.