This athletic move takes the plank to an all-new level. "It not only improves your core stability, but it targets muscles in your hips, groin, lower back, and often-neglected lower abs," says Durkin. Get your heart pumping by speeding up the movement, or hammer your core muscles by slowing it down. Either way, the exercise will boost your athleticism and will give you something to bare at the beach.
The crunch is the most popular abs exercise because anyone can do it. But that doesn't mean it's the best exercise for training your middle. "Crunches flex your trunk," says David Jack, owner of ActivPrayer in Phoenix, Arizona and creator of Men's Health MA40 Workout. "But the main function of your core is to prevent movement and resist force through your torso."
In addition to this, you must also avoid sugary products (pastry, candy bars, coke etc), as sugar has a series of negative effects on your health, and it also contributes to belly fat which is the most difficult to get rid of!  Of course you will be tempted now and again so have a cheat day once a week when you can have your favourite “bad foods” but don’t go too crazy!
Do it: Stand with your feet hip-width apart and hold a dumbbell in your right hand, palm facing inwards towards the torso. Keep your back straight, activate your core, and then bend to the side as far as possible—but only at the waist. Hold for one second at the bottom of your range of motion, and return to start for one rep. Do between 12 and 20 reps for one set.

The reverse crunch comes in 7th place for effective ab exercises, with a focus on the rectus abdominis. With this move, you're curling the hips off the floor, so you'll feel this in the lower part of the abs. The key to this move is to avoid swinging the legs to raise the hips. This is a small, subtle move, so you only need to lift your hips a few inches off the floor.


“Unless you’re naturally gifted or a child, six-pack abs are always going to be a challenge. But remember, muscles have memory, so once you achieve a six pack once, if you lose it, it’ll be easier to get it back later. These days, I can get six-pack abs pretty quickly because I have such deeply ingrained muscle memory from my teenage years as a gymnast, when I was practicing in the gym five hours a day, six days a week.
1. Consume fewer calories than you're burning every day. Job one when trying to achieve a six-pack is to lose weight, which means expending more calories than you take in on a daily basis, says Dani Singer, a certified fitness nutrition specialist and certified personal trainer in Baltimore. He's the director of Fit2Go Personal Training. To optimize losing fat and not muscle, you need to be in a caloric deficit, eat adequate protein and strength train, he says. "The source of your food will affect health, but will have zero effect on your body composition," Singer says. "It's the total calories and macronutrients [protein, fat and carbs] from your foods that will determine how your body looks."

The crunch is the most popular abs exercise because anyone can do it. But that doesn't mean it's the best exercise for training your middle. "Crunches flex your trunk," says David Jack, owner of ActivPrayer in Phoenix, Arizona and creator of Men's Health MA40 Workout. "But the main function of your core is to prevent movement and resist force through your torso."
"This exercise is so effective because it teaches you not to rely on your bigger muscle groups (like your thighs) and focuses on using your abdominals correctly in a controlled manner without using momentum. The use of the ball gives you natural feedback of your weaker side so that you can adjust and work on symmetry of your musculature, preventing future injuries."
And, since the muscle is designed to bring your lower ribs and pelvis closer together or farther apart, you need to work them that way—with crunches and reverse crunches, Cary says. In fact, research commissioned by the American Council on Exercise shows that the crunch works the rectus abdominis better than other common abs exercises including the plank, sit-up, and boat pose.
“You will not make more muscle by trying this route,” says McComsey. When you do cardio you’re burning calories, but you’re not stimulating your muscles to grow as you would with weight training. “The more muscle you have, the more calories and fat you’ll be burning,” he says. McComsey recommends hitting the weight room three or four days per week, with one of those days being a circuit with a variety of exercises. If you need to do cardio, try one day of 20-minutes of fast-slow intervals. 

To do it: Start seated, then lean back, resting your weight on your forearms (bending your elbows behind your body, fingers facing forward). Extend both legs straight out in front of you. Bend your right knee into a ‘passé position’ by pointing your right foot and pressing the inside edge of your right foot along the inside of your left knee. Draw your abs in tight and lift your legs off the mat and towards the chest (maintaining passé position). Bring your right knee all the way up to the right side of your chest and then lower your legs (still in passé) back down, about two inches from the floor (or as low as you can). Repeat 8 times and then switch legs. Try to do 8 reps on each side, for up to 2 sets.
Genetically, women have a disadvantage when it comes to that. Their bodies store more fat than men. For good reason, says Calabrese. Women's bodies are designed to bear and nourish babies and fat is the primary energy source to support fetal development. In addition, Calabrese says, men generally lose weight quicker as a result of regular exercise.

Because of its difficulty, it is not recommended for beginners, and it is extremely important to do it correctly. Sloppy or half-baked form won't help your abs, and it just might harm your neck and back. Check out the detailed article about the dragon flag to learn the proper way to do this movement, and a video to learn about progressions before you try it.
Calorie Counting — I count my calories to make sure I’m on track everyday. I highly recommend the HealthifyMe app. They have an excellent database of food and dishes that you can select and track calories for. They also provide the exact macro breakdown for foods with a day-wise and week-wise analysis of your nutrition. I averaged out between 1500–1600 calories on Cardio Days and 1800–1900 calories on Weight Training Days.

Start on the floor with your feet outstretched (more difficult) or your knees slightly bend with your heels on the floor (a bit easier). Contract your core, lift your upper body from the hips so your lower back and shoulders are about 10 inches off the floor. Stretch your arms out along your sides with palms up, and simply hold that position for up to a minute at a time. Ouch. It's a good one.
I use the ab machines at the gym. I do a couple variations on crunches (sitting up and lying down both on machines with weights. I can crunch 55lbs on the one that’s sitting position, 40 on the other), hanging leg lifts (which kill my shoulders), the oblique twist machine, as well as full body workouts. I just started the gym about 2 months ago and have really upped the weight since then so my body is definitely progressing.
Do it: With your feet shoulder-width apart, lift a barbell off the rig, centering it evenly across your shoulders. (This version of the squat targets the core, not the legs, and so you should be using far less weight than you would for a traditional back squat.) Send your glutes back like you’re lowering into a chair, bending at the knees as deeply as possible. Press through your heels to return to the starting position for one rep. Do 12 reps for one set.
Abdominal muscles consist of three layers. The very deepest layer is the transversus abdominis, which acts as the body's girdle, providing support and stability and plays a critical role in exhalation. Next is the rectus abdominis, which flexes the spine. Closest to the surface are the internal and external obliques, which turn the trunk and provide the body with rotation and lateral movement.
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