You can have a strong and flat stomach, no matter how old you are

Exercises for a flat stomach best for a 20-year-oldĀ  * squeezing on the ball – strengthens the arm muscles, improves skin toneĀ  Lie on a large ball, spacing the legs quite wide to obtain a stable support. Grasp the weights (1.5-2 kg each) and bend your hands in the elbows so that your hands are pointing your back towards the head. Inhale and straighten your…