Go for 12 crunches on one side, then repeat on the other ... Harvard Medical School says that sit-ups are hard on your back because “they push your curved spine against the floor and work ...

The same can be said of long-standing resistance training exercises and bodyweight movements like pull-ups, squats, push ... crunches can work additional muscle groups. "Laying on your side ...

The main difference between sit-ups ... crunches. Types of crunches The list of crunch variations is long, with new types being added all of the time. Boat crunches, penguin crunches, and standing ...

No matter which variations you follow, crunches have the advantage over sit-ups of being able to better target abdominal muscles. "Because the movement is smaller, you can control momentum more," ...