What is the best form of physical activity?The best form of physical activity is what you will actually do often. That is it. What you will actually do. And the good news is, it can be something different every day. You can walk one day, run another, go swimming another, play Frisbee golf another, go golfing the next, rollerblade the next day, ride your bike another day, etc. You do not have to do the same thing every day. But you can if you want to.Some hints on what your inner knowing might sa.