3. Exercise Ball Crunch: This is one of the most effective ways to strengthen and flatten abs. Studies show this exercise is 40% more effective than regular ab crunches as it targets smaller muscles for flat toned abs including the oblique’s for a small waist and the outermost muscles that your typical ab crunch may miss. To begin, lie down on the ball positioning it under the lower back. Place arms behind your head. Tighten your abs as you lift your torso off the ball while keeping the ball stable. Lower back down and repeat 15 times with 1-3 sets.
In a way, moderate-intensity physical activity is that "magic pill" a lot of people are looking for, because the health benefits go beyond keeping your waistline trim: Not only can it reduce your risk of cancer, stroke, diabetes and heart attacks, but studies have shown that physical activity can significantly improve the moods of patients with major depressive disorders.