Its always best to remove your makeup before you sleep, but makeup doesn't usually cause acne unless your skin is irritated by the ingredients. Wearing makeup while you workout isn't ideal but I usually wear makeup to workout too and it has never made me breakout more. Just be sure to remove it as soon as you can because the layer of makeup on your face may cause your sweat to clog your pores.

I wore the bare minerals powder when I was an irresponsible teenager and slept in it occasionally, but honestly. If you want to look after your skin just wash it off.. I also used to wearmakeup to bed with my boyfriend when I was younger because I was self concious of my skin - NOT GOOD.
Your skin can benefit from having a good sweat when you work out so don't wear makeup if you can help it!

Whether Makeup is mineral based or not, it is always preferredto remove it before Sleep. Makeup can never be natural or Chemical Free. Remove your makeup properly from going to bed and then use face wash to clear all the residue left behind.

Your skin won't be able to sweat properly! When you exercise, your body is detoxing, which comes out in your sweat!

Yes of course its better to wash off the makeup when you can, but I'm self conscious at the gym and wear my mineral peptides sometimes. I haven't had any issues with breakouts...can't hurt to test it out and see how you react.