Here are four dumbbell exercises that can help get your body up to speed, as per fitness blog FitSugar.

Elbow plank
The purpose: A strong core and tone chest, shoulders, and biceps.

1. Lie face down on the floor resting on your forearms and knees.
2. Push off the floor, raising up off your knees onto your toes and resting mainly on your elbows.
3. Tighten your abs and concentrate on keeping your body as straight as a board -- back flat, not drooped, and your rear shouldn't be sticking up into the air.
4. Hold as long as you can. Aim for 20-30 seconds in the beginning, and repeat three times.