The reason: Classic ab moves like crunches and situps work the muscles that allow you to flex (that is, round) your lower spine. True core exercises, on the other hand, train the muscles that prevent your spine from rounding. They also allow you to transfer force from your lower body to your upper body (in a golf swing, for example), and vice versa.
This way, you will prevent muscle exhaustion and injuries. There are several exercises for your abdomen that are highly efficient, such as the bicycle, Captain’s chair leg raise, exercise ball crunches, long arm crunches or the well-known crunch with heel push. These particular exercises are especially designed to stimulate your abdominal muscles, and they also involve several other muscle groups.  Vary the exercises and add weights as necessary to make sure you are always pushing yourself.

Try adding four or five to the end of your workout to challenge your core a little more, or turn them into a standalone workout—try doing 12-15 reps of each exercise and then repeating the circuit (of four or five exercises) three to four times, to start. If you feel tension in your lower back during any of these exercises, stop and reset, making sure your abs are really engaged and that your back is not arched. You can also try starting with fewer reps. If you still feel discomfort, skip that exercise and try a different that allows you to keep your spine in a safer position. (It's also helpful to read up on which abs exercises tend to be irritating for lower-back issues beforehand if that's a concern for you.)
Kneel on a mat on all fours with your hands directly under your shoulders. Stretch your legs back one at a time to come into plank position (the “up” part of a push-up); engage your ab muscles. Your body should be long and straight; don’t let your hips sag or lift your butt too high. Imagine there’s a seat belt tightening around your waist, drawing your lower-ab muscles inward.

Lie face-up and place your lower legs on a Swiss ball. Extend your right arm overhead and bend your left arm at a 90-degree angle; then grasp the upper portion of your right arm so you form a cradle for your head. Flexing your toes and holding the ball in place by contracting your hamstrings, crunch forward to the finish position. In this position, increase the tension on your abs by attempting to pull the ball towards you with your hamstrings. Return to the start and exhale. Your rectus abdominus can flex only about 30 degrees (strictly), so when you perform this exercise it may not be necessary to lift your shoulders off the floor to achieve peak contraction. You can make the exercise more difficult by pulling harder with your hamstrings, maintaining peak contraction longer and by holding a weight in your free hand.


What's the fastest way to sculpt a rock-solid core like Rocky Balboa's? Slow it down. "Your muscles can handle more weight on the eccentric, or lowering, phase of a lift," says Todd Durkin, C.S.C.S., owner of Fitness Quest 10 in San Diego, California. So decreasing the pace of that phase—like you do with this slo-mo ab exercise from Rocky IV—forces your muscles to work harder, accelerating your gains.
Start in a side plank with left forearm on floor, elbow under shoulder, feet stacked, and hips lifted so body forms one long, straight line. Stretch right arm up to ceiling. This is your starting position. Draw the right hand down and reach it below left underarm as you curl upper body forward so shoulders are parallel to floor. Return to starting position. Repeat for 30 seconds on each side.
Español: marcar el abdomen rápidamente, Deutsch: Ein Sixpack schnell antrainieren, Italiano: Ottenere Velocemente degli Addominali Scolpiti, 中文: 快速拥有六块腹肌, Русский: быстро накачать пресс, Nederlands: Snel een sixpack krijgen, Čeština: Jak rychle získat pevné svaly na břiše, Bahasa Indonesia: Mendapatkan Otot Perut Six Pack Dengan Cepat, 한국어: 식스팩 빨리 만들기, हिन्दी: जल्दी सिक्स पैक एब्स प्राप्त करें, ไทย: วิธีการมีซิกแพคเร็วๆ, العربية: إبراز عضلات البطن بسرعة, Tiếng Việt: Có cơ bụng 6 múi trong thời gian ngắn, Français: avoir des abdominaux bien découpés, 日本語: 6つに割れた腹筋を作る, Português: Conseguir um Abdômen Definido
This means exercises such as squats, deadlifts, and virtually any exercise done standing (including things like dumbbell curls when done standing up). So the next time you do deadlifts or even dumbbell curls, really squeeze and contract your abs. Not only will doing so allow you to lift more weight, but it’ll also help you develop a strong and badass six pack.
Stability moves like the plank are a great way to strengthen a weak core and prevent lower back pain. But if you want to kick things up a notch, then start dancing. When you perform the breakdancer, you'll quickly move your feet from side to side and across your body. However, you must maintain the same rigid, straight torso that you would when performing a plank.
A. Unfortunately, most people don’t have the right notion of what a natural six pack or a lean body looks like. We’re so constantly fed images from magazine covers and movie posters, it’s hard to lose sight. These people use various editing techniques, strategic lighting and poses to get the best shots and convince us that that is what muscular men look like which is not true. Many popular Hollywood/Bollywood actors resort to consuming anabolic steroids and drugs which is the reason they look absolutely shredded for a particular film. The on-screen muscle you see on them is easy 10+ years of hard earned gains for natural individuals. Try comparing an actor’s in-film photos to photos taken a year or two afterwards. You’ll know what I’m talking about. If you want to look big/buff naturally, you need to put on some fat, potentially losing your abs and muscle definition in the process. As for the ‘skinny’ issue, the problem is so many people are overweight these days that that’s become the new ‘normal’ so when they see someone with a healthy, lean body composition they think it’s skinny. This issue should go away over time when one builds more lean muscle.
Caffeine Pills — I bought into the fad and purchased fat burners. Don’t use them if you workout in the evening because you wont be able to sleep all night and that’s going to cost you some gains. I barely used these in the first 3 months and then regularly for the next 2 (with the sole motive of finishing them). I didn’t really notice any significant difference as far as fat loss was concerned but I’ve noticed more intensity and focus in my workouts thanks to the high caffeine content. While I don’t wholeheartedly recommend them, use them alternately and only for morning workouts if you purchase them. A cup of black coffee is a far more natural and preferable alternative.
"My goals six years ago was to 'get abs' and I used to think cardio and crunches would get me there. But it wasn’t until I started lifting weights and varying my abdominal exercises that I started to see a major change. You don’t realize how much you use your core muscles in order to perform powerful rapid movements like deadlifts!" — Shante Franca, @shantefranca
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