How Many Sit-ups A Day To Get A Flat Stomach?
How Many Sit-ups A Day To Get A Flat Stomach? A: No. Sit ups are great for tightening your core. They strengthen and tone your rectus abdominus, transverse abdominus and oblique abdominal muscles as well as your neck muscles. The American College of Sports Medicine recommends three sets of 8 to 12 repetitions three times