Can anyone recommend a good fitness routine? i sent in my application today and decided its time to start getting serious about my health and fitness. Im seriously unfit, underweight and unmotivated. I can only run about 1/2 mile before my quads seize up, i can only do about 35 sit ups and 15 push ups (which is an improvment because a few weeks ago i could barely mange 5) and i can only go about 10 minutes on the punch bag before i drop out. I know my main problem is that I give up too easily, and i really need help. Any advice you could give me would be really appriciated.