Pilates Sit-up
The Sit-up or roll-up is one of the classic Pilates exercises. It is a great challenge for the abdominal muscles and is well known as one of the flat abs exercises. Its intensity is often described by terming one Pilate sit-up as been equivalent to six regular sit-ups and is deemed much better than crunches for creating a flat stomach.
To do a Pilate Sit-up, lie back with legs straight and arms extended above head next to ears. Bring arms forward, tilt chin down, and slowly curl upper body up, reaching hands to toes. Repeat 8 to 10 times for each set.