Boobs need firm control if you want to get fit
Or they will hurt you, rubbing sore.
Unfortunately, the good bras,
Necessarily well engineered to support, will
Cost a heap and,
Even then, be washed to bits
Regardless.
If I'm going to get something, I usually get it in spades - luck (both kinds), children, clutter, dirty laundry, bright ideas, daft ideas...