Lifting = Acne?

[Green Kool Aid]

I have had relatively clear skin since I was 18 or so (I'm 21 now). In the past ~3 months of lifting, my skin really started to break out as badly as it did when I was a ~16 year old. I have taken the last eight days off to see if lifting was the problem, and my skin has cleared up almost completely. One thing to note maybe is that a lot of the acne was on my neck.

Has anyone else encountered this problem, and if so, what solutions beyond basic facewash do you use?

I lift mostly for looks, so this sucks.