There’s good news when it comes to exercise and breast cancer. Recent research shows working out benefits women fighting the disease. Of course, it’s important to note that the exercise was done in addition to standard cancer treatments. Budd adds that the data suggest it’s never too late to start exercising if you’ve been diagnosed with breast cancer. The NIH study, which was a joint venture between SWOG Cancer Research Network, Roswell Park Cancer Institute, Cleveland Clinic and others, can be found in the Journal of the National Cancer Institute.