These are the five bad habits of men that damage their penis.

Caring for the penis is important, and doctors say that such care is necessary and must be continuous.

British National Health Service says the size and shape of the penis is different among all males.

But like other parts of your body, your habits can also affect this organ, writes The Sun.

Doctor Siyamac Saleh has discovered some of the most common customs that can actually be bad and damage your penis, so you should avoid it.

Saleh listed five things that men and boys should be careful because they're bad for the penis, and they are: Smoking, drinking alcohol, stress, and lack of sleep, and overweight.

On the other hand, the doctor urged men to give up these habits because their damage to the penis is great.