fit, my solution at the time was to buy the tightest-fitting sports bras I could find to eliminate any bouncing. I figured this would be the best way to continue running as fast as my growing belly would let me and keep doing burpees at Barry’s.published earlier this year found that wearing a bra with a too-tight underband can actually make it harder to breathe, and thereby harder to work out.
"We're so used to wanting to get into the smallest size as women that we've just trained ourselves to pick products that way."—Shayla Kipp, PhD Another piece of the puzzle might have to do with the fact that working out in a sports bra that’s too loose and unsupportive feels terrible. Insufficient breast support has been found to increasefor any high-impact activity, some of us sometimes try to squeeze out extra support just by squishing the girls as much as possible.Since completing her research, Kipp says she’s personally gone up a size when buying new sports bras, and finds she definitely breathes better during workouts.