There is no problem for women to use bras, so it can be said that there is no harm to human skin from the material. So theoretically, men can wear bras. Of course, bras are specially designed for women. I don't know if it is suitable for men, and whether it will oppress the chest muscles. If worn, the local skin has obvious indentation, redness and swelling, and even bleeding. Then I suggest you don't wear it. If you really need it, you'd better have a bra specially designed for you.