Double Sit-up Trainer

Situps are classic abdominal exercises done by lying on your back and lifting your torso. They use your body weight to strengthen and tone the core-stabilizing abdominal muscles. Situps work the rectus abdominis, transverse abdominis, and obliques in addition to your hip flexors, chest, and neck.The sit-up test is a measure the endurance of the abdominal and hip-flexor muscles. The aim of this test is to perform as many sit-ups as you can in two minutes. This test forms part of the US Marine Physical Fitness Test (PFT), performed by US Marine personnel every six months.