My 20 year old cousin recently got diagnosed with cancer (who is not overweight by any means) and has been going through chemo and will be undergoing surgery soon. Her sickness was really a wake up call for me. Not only does cancer run in both sides of my family, but so does diabetes. I realized that I need to start taking better care of my health if I don't want to be any more susceptible to disease than I already am. Sometimes after a greasy meal, I can feel slight chest pain. Needless to say, I'm starting to eat healthier. Less greasy foods, cutting out fried foods, soda...but carb's are still an issue. I'm 5'8'' and about 225lbs. Of course I do have some muscle since I was a lineman in highschool, but I never did any cardio. That was 3 years ago though. (I'm 20 y.o.) (I can bench approx 265lbs and squat around 400lbs) What are some options for cardio other than jogging or swimming? I don't have ready access to a pool, and I've been jogging for about 20 minute sessions the past week or two, but I can tell its really hard on my knees. I've been thinking about picking up a jump rope. Is it a good method for burning calories? Thanks for your advice.