How do I keep weight off? Most sprints should not last more than 30 seconds You might have to work a little harder with a hand-push lawnmower Lifting weights can also protect your metabolism and hormone levels  which often decline during dieting 15 When you cut down fats with carbs  you restrict yourself from almost al satisfying foods  which leads to starving  feeling stressed all the time  and not being able to carry out daily life activities