Next time you pack your gym bag for work, make sure you remember to pack your sports bra. You need it. You may think that you can go running in your regular bra and let it "air out" while you take a shower. You can't. It's hotter out than you think. You're going to sweat through the thing and can't put it back on. Plus, your boobs hurt. You're going to end up spending the rest of the day bra-less in a cable knit, v-neck sweater. At work. With a D Cup. Remember how comfortable that feeling was and pack the sports bra.