I own three of these, and I wear them for everyday activities because I find them very comfortable. However, they are not for high impact sports, especially if you are large chested.  I have very large, dense breasts (36DD) which means they are heavy.  This bra provides almost no support for any activity in which you might propel yourself an inch or more into the air.  I have a Champion Powerback Bra (I think that's what it's called) that does provide better support, although it can be challenging to get on.  Overall, I like the bra I am reviewing, just not for any athletic purposes.