With just dumbbells... Been jogging, doing most of these: http://www.sport-fitness-advisor.com/dumbbellexercises.html Been doing a variety of push ups like in this vid: http://www.youtube.com/watch?v=VWKW19dgceQ deadlifts too... been doing this 5 days a week. I should probably start doing more ab exercises. What are the best ab workouts? Should I switch it up more? What other exercises should I add?