I work out a lot and do several different things from long distance running to CrossFit/Olympic lifting and P90X.  I've run all my marathons in this sports bra and can't get enough of it!  The one caveat is that you HAVE TO find the right size for you. So trying it on is a must. Obviously you can't try things on if you buy them online so I highly suggest trying one on at a store to find your size first just in case you can't return it if you buy it online. I own about six of these sports bras and have gotten all the women I know to try them for their exercise needs.  I totally recommend this for all types of exercise!