5. Plank Exercises – This is one of the best exercises for your core muscles. Not only is great for tightening the abdomen, it will help all of the other muscles in your body to get toned as well. Get into a push-up position and rest your elbows on the floor. Be sure that your back is straight, from your feet to the back of your head. Try to hold this position for 30 seconds and work your way up.
