Lie on your back with knees bent to 90-degree angles. Straighten your arms by your sides, and lengthen your fingertips. Press the backs of your shoulders against a mat, and slide them down away from your ears. Focusing on the deep waist muscles, inhale and slowly move your knees to the right, then exhale and return to starting position. Repeat on the left; that’s 1 rep. Do 5–8 reps.
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."

Start on your back, bend your knees up with shins parallel to the floor and extend your arms to the ceiling. Straighten your left leg and extend your right arm back to about 6 inches off of the floor, and then come back to the original position. Then, repeat the exercise on the opposite side. Just be sure to keep your abs engaged throughout this move to really work your muscles!
Trainer tip: You know planks, right? It’s easy to go through the motions here. Don’t do it. “The key is to squeeze your entire body—quads, glutes, core, back, and fists—as tight as possible while taking diaphoretic breathes throughout the hold,” says Wealth. No matter how many times you’ve done it, this exercise is as difficult as you’re willing to make it.
One of the hardest parts of getting a six-pack is to maintain your training and diet discipline until you achieve your goal. There will be days when you will want to skip your training because you feel tired or you don’t feel like training. There will be days when you will want to devour a large pizza, abs be damned. Giving in to your impulsions will prolong the time to get ripped or worse, quit altogether before you reach your goal. You must persevere when the going gets tough and get tough it will.
As the kettlebell shifts from hand to hand in front of your body, your core has to stabilize to fight against the movement of your arms, and your biceps, shoulders, and back muscles need to work together to control the pace at which you are catching and releasing the kettlebell. Your lower-body will get a workout, too. You can perform this abs exercise with a bent waist to hammer your hamstrings and glutes or try it in a squat position to target your quadriceps. No matter which way you try it, you'll see bigger strength gains and a smaller waistline in less time.
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.
But instead of just trying to perform as many reps as possible, slow down and really focus on the quality of the movement—especially the eccentric, or downward motion, of the exercise, he says. “The eccentric contraction is the most important phase when sculpting any muscle.” Plus, focusing on quality over quantity will help protect your back (some experts say crunches can be potentially troublesome for guys with back issues.)
A University of Southern Maine study found that a single set of a weight-training exercise torches as many calories as running at a 6-minute-mile pace for the same amount of time. So for every second you spend lifting weights, your body is expending high amounts of energy. Add high intensity interval training (HIIT) principles to your workout, and you could see even more gains.
Contrary to what popular culture portrays, one does not need to lift really heavy if muscle hypertrophy, aka “bigger muscles” or aesthetic gains are the primary goal (see bodybuilding vs powerlifting). One needs to ensure that a particular muscle is subjected to enough time under tension and training volume to ensure that muscle fibres are broken down and rebuilt stronger over time. This can be done by following a high-volume, moderately high rep range, moderate weight and low rest period lifting routine. I start off with 5 sets of a heavier compound lift eventually moving to isolation exercises. I started off with the popular ‘3 sets of 10’ for isolation exercises, then to 12 and now hit 4 sets with the rep ranges 15,12,10 and 8. Higher reps would mean a lighter weight and vice versa. My last set is almost invariably a dropset. I hit around 15 -18 working sets per muscle group per week.
BMI vs Body Fat Percentage- Body Mass Index or BMI calculates your ideal weight in relation to your height. This isn’t a great way of determining whether someone is healthy because it completely ignores how much muscle an individual holds. A better alternative is determining your Body Fat Percentage -BFP and then take a cue from your BMI as to how healthy you are. Here’s a visual comparison of how different body fat percentages look like. You can get your BFP measured by a Bio-electrical Impedance Scale found at gyms or at a nutritionist’s clinic.

Evening Snacks (5.00PM) —1 scoop whey protein, 5 almonds, 3 walnuts. If it’s cardio day I mix a spoonful of peanut butter with my protein shake for some extra fat that satiates my hunger. I also keep a couple of reasonably priced Sugar Free Protein Bars in my bag in the rare cases when my hunger gets really bad or if I couldn’t manage a proper meal. There are some really expensive ones out there and while I’ve indulged in a few of them, the ones I linked to give me the best bang for buck and are also incredibly tasty.
Begin in the basic plank position. Your torso will be in a straight line from head to toe and avoid any drooping or sagging of the hips or shoulders. Also, avoid arching your back, or hanging your head. Warm up by maintaining the plank for at least 60 seconds while maintaining control. If you start shaking or losing form, drop to your knees and rest a few seconds and continue until you've completed a full minute
While legs should never be forgotten, this program is designed to concentrate on the abs and upper-body beach muscles. Hit legs on abs/cardio day by isolating each body part at the end of your routine. The idea of isolating muscle groups and upping the volume is predicted by research that backs applied solutions, which we have seen from those with rock-solid physiques. 

“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: Lie on your back with your knees bent, feet flat on the ground. Bring both arms overhead and hold onto the bottom of couch or a heavy medicine ball (as shown). Cross your right ankle on top of your left knee. Exhale and lift your legs in (in the same cross-legged position) as close to your chest as possible, lifting your hips and lower back off the floor. Inhale and slowly return to the starting position. That’s one rep. Try for up to 15 reps with the right leg, then repeat on the left.
Bicycle: This exercise works your obliques as well as your rectus abdominis. Lie on your back, hips and knees bent at 90-degrees, chest curled over ribs, hands behind your head. Extend the left leg out while bringing the right knee in towards the chest and rotating the left shoulder toward the right knee. Keep the arm from crossing the face. Rotate from the trunk through the center to the other side without dropping your chest. Move in slow, controlled movements without shifting your hips.
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!
×