Low impact exercises include:
These bras are almost like bralettes. The sports bra can be worn on its own or with a top that doesn't have additional support built in.
Medium impact exercises include:
*Really any jump free workout
For a medium impact activity, I would recommend a racer back style for more support and also would wear a workout top with a shelf bra or additional support for added comfort.
High impact exercises include:
*Running (I consider running high impact for larger breasts)
With a high impact activity, I'm a bit on the paranoid side and I wear a regular tshirt bra, a sports bra and usually a top with support in it as well.
What is your favorite sports bra? I like to stock up on a variety of sports bras so I'm not always doing the wash!