Rolling sleeves?

At the risk of sounding terribly foolish, how does MFA roll up their sleeves? On dress shirts, I usually fold up one cuff length and repeat 2 times. But over the course of the day this loosens up and it actually falls and I find it quite uncomfortable. I can roll it up above my elbow but that looks a little odd. Also, how to deal with sweaters and sweatshirt sleeves becoming loose? Is there a way to roll up the sleeves on those without that happening?