Sports Bra What Is The Proper Way To Wear A Sports Bra?

What is the proper way to wear a sports bra? - sports bra

When I drive the gym in just a bra for sport, how should I say lol?

How can the bra and sports bra sport alone? Since it seems that everyone does it, but I can not. My breasts (C-cup, not great, but still) to be shaken too much and it hurts.
Or should I wear a bra under my sports bra regularly. I've never seen someone do it, but it is the only way that I feel good .. Run

Lol help?