To build really great abs it's important to first understand what abs do. Their full name is 'rectus abdominis'. The 'rectus' bit, is Latin for 'straight, proper, upright'. Contrary to popular opinion, the abs primary job is not to curl you up into a ball, but they work together with the back muscles to maintain correct posture and stabilize the spine. Therefor training your abs without training your back will create an imbalance in the musculature that supports your spine. These muscles are not just for show! So the best exercises for abs are ones that force your entire core to go into overdrive to support your spine. Some exercises that do this are squats and deadlifts. These exercises will train your entire core to work together to do what it is designed to do. At the same time they will also train a lot of other muscles (eg glutes and quads), and this promotes even more rapid fat loss as the body recovers.
Do Crunches: Lie on the floor (with or without a mat) your arms in front of your chest. Bend your knees up as far as they go. Do not place both hands behind your head. Placing both hands behind your head can cause lower back problems in the long run as it places unnecessary stress on that part of your body from pulling on your head and neck. Another alternative is to cross your arms in front of your chest and lightly place your finger tips behind your ears, without pulling on your neck. Now raise your shoulders (upper torso) towards your knees, using strictly your abdominal muscles. It is very important not to lift your entire back off the floor, as this can cause back strain, and the extended movement does not help you develop six pack abs any faster. The most important part of the crunch is the initial flexing of your abs as you lift your shoulders off the floor. As soon as you begin lifting off the floor exhale through your mouth, ending with a gasp once your shoulders are off the floor. Then pause for a second once you are at the top of the crunch and exhale the last bit of air from your diaphragm while flexing your abs. The proper breathing and flexing make all the difference. Now lower back down slowly and controlled while inhaling through your nose, just until your shoulder blades touch the ground. Do not let your head touch the ground and repeat.
Do Situps:
on the floor (with or without a mat) your arms in front of your chest. Bend your knees up as far as they go. Do not place both hands behind your head. Placing both hands behind your head can cause lower back problems in the long run as it places unnecessary stress on that part of your body from pulling on your head and neck. Another alternative is to cross your arms in front of your chest and lightly place your finger tips behind your ears, without pulling on your neck. Now raise your shoulders (upper torso) towards your knees, using strictly your abdominal muscles. It is very important not to lift your entire back off the floor, as this can cause back strain, and the extended movement does not help you develop six pack abs any faster. The most important part of the crunch is the initial flexing of your abs as you lift your shoulders off the floor. As soon as you begin lifting off the floor exhale through your mouth, ending with a gasp once your shoulders are off the floor. Then pause for a second once you are at the top of the crunch and exhale the last bit of air from your diaphragm while flexing your abs. The proper breathing and flexing make all the difference. Now lower back down slowly and controlled while inhaling through your nose, just until your shoulder blades touch the ground. Do not let your head touch the ground and repeat.
Do Leg Lifts:
Lie on the floor, legs straight out, hands at your sides. Lift your legs straight up (not bending your knees at all) until they're at a 90 degree angle (or close). Lower your legs and repeat without letting your legs touch the floor. For more challenge there is equipment at most gyms that will allow you to raise yourself up using your arms as support and dangle your legs. You can perform leg lifts there too. If you're using this piece of equipment, you can make it easier by just raising your knees to your chest. It's more difficult to raise your legs to a horizontal position with your legs straight. This helps firm up the lower abdomen. If you're truly a monster, try doing leg lifts with a medicine ball hanging from your feet. Or hang from a pull up bar and raise your legs in front of you all the way up to the bar.
Do Jackknife:
Lie down flat on the floor. Place your hands on the ground to your sides for balance; you can pick them up as you get used to the movement. Simultaneously raise your knees and torso so that your knees and face meet on an imaginary line extending from your pelvis to the ceiling. You should be able to kiss your knees at the top of the motion. Your legs will naturally fold bringing your feet towards your hips, much like a jackknife. Lie back down (i.e. "spread out") and repeat. Place a weight between your feet when you think you can handle it.
