❝ Crunch exercises target the muscles on the front of the abdomen: the rectus abdominus, or abs for short. These muscles are those that are known as the six-pack. ❞
Weighted Crunch :
➊ Lie down on your back on a bench and hold a dumbbell on high of your chest.
➋ Raise your higher body till your shoulder blades not bit the bench and lower yourself back off when a brief pause.
➌ To avoid pulling your neck with your hands, look up instead of looking at your knees.