Walk, run, swim...

No matter what kind of physical activity you do, it beats sitting on your ass!  1 mile walked or ran is 1 mile that you didn't do before. Once the routine and habit of working out kicks in, you feel almost disappointed in yourself when you don't do it. 

I attack my workouts 2x a day. 6 days a week. Once in the morning and once right after work. Some days are harder than others. My focus is on my goals and my health. I don't do it for anyone else, but myself. So no matter what, get out there and do something. No excuse is valid.