walking or swimming are the best bet. running burns muscle. Unless you are built like a kenyan it hurts. Joint pain and bust pain both.:lol: walking is great fat burning without sacrificing muscle mass. Guys, you don't want to lose your muscle mass or you won't retain the weight loss long term. you need the muscle to burn future calories. girls you may want to lose a little muscle depending on your shape goals but the same principal applies.
moderate weight bearing exercise is the key to building quality muscle mass. so if you are hitting a preseason weight routine and walking or swimming you are getting the best of both worlds.
the inline skaters among us are also doing fine no need to walk or swim for them.