Acne is places other than your face?

Rosemary
So I'm pretty lucky, and I don't really get ally for breakouts on my face, but I feel like my body is getting its own back by giving me acne in other places, mostly in my chest and my back! It's super annoying and it's making me uncomfortable taking my bra off infront of the bf. I'm quite an active person so is it just causes by sweat? Any advice would be great!