Was just curious how many people here incorporate a punching bag into their weekly workout routines? I have been wanting a heavy bag for a while and finally made room to put one. I hate doing boring cardio so I have been doing sprints off and on for a while. Problem is, it's a 105 out and sprinting in the sun is hard to cool down and get in a lot of sprints. Maybe I just need to build up to it, but my garage stays pretty cool so I think I will give it a try. Instead of sprinting, I plan to just rapid punch myself out, catch my breath, rapid kick next time, catch breath, knees, elbows... something along those lines. I haven't hit a bag in a while but I remember times when I have, it was a real ass-whippin! Should help keep me ready for confrontations as well. So is anyone using a heavy bag for cardio? Seems like a great idea to me.