Running may decrease knee inflammation. Even if you look like Phoebe from friends while you’re doing it, running is one of the best workouts for your heart. Unfortunately, running can also be detrimental to your knees, which take a pounding with every step, but new research shows that moderate running may actually be beneficial to your knees. Researchers out of Brigham Young University tested the knee joint fluid of healthy adults before and after running. They found that 30 minutes of moderate running actually decreased knee inflammation, the hallmark of osteoarthritis. While this doesn’t necessarily mean runners are less likely to develop bone problems in their knees, it does suggest that running safely and in moderate amounts may provide newfound benefits to knee health.