To do it: Lie on your back with your arms out to each side in a ‘T’ shape, palms facing down. Position a stability ball between your feet and extend both legs up towards the ceiling, just above your hips, knees slightly bent. Gently squeeze into the ball, draw your abs in tight, and press your ribcage into the floor as you carefully move the ball to the right, lowering both legs towards the floor (only go as far toward floor as you can without dropping to the side). Press the ball back up to the ceiling and repeat to the left, alternating sides for one minute.
But there's science behind this buzzkill. The rectus abdominis — the muscle that makes the stomach look defined as hell — is typically covered by fat (because that's how humans are made) and isn't affected by things like crunches and planks. "You can work your abs all you want, but if you have a layer of fat over them, the 'pack' can’t be seen," Ball says. And FWIW, that's not a bad thing or something to feel bad about. "It’s very unrealistic for most people to have body fat percentages low enough to see the abs." 

To do it: Lie down with a small ball (a small pillow will also work if you don’t have a ball) under your heels, both arms extended over your head, palms facing towards each other. Inhale to prepare as you lift your head, neck, and shoulders off the floor and then exhale as you continue to roll up by drawing in your abdominals, reaching up and over towards the feet. Keep your abdominals contracted, with your spine rounded in a ‘C’ curve, and then inhale to prepare and exhale as you roll down through each vertebra in a controlled movement, keeping your heels pressed evenly into the ball the entire way up and down. Do 15 reps as controlled and precise as you can.
Intermittent Fasting(IF) — Basically, skip breakfast and have only water/black coffee till lunch. In IF, you don’t eat for a period of 16 hours, typically skipping one major meal. You avoid spiking your insulin levels, your HGH is elevated and allow your body to tap into fat for energy. It also allows you to have a larger lunch and dinner, keeping you full longer for the rest of the day. IF is also shown to have various health benefits and is completely safe. Fun fact, even Terry Crews from the TV show ‘Brooklyn nine nine’ follows IF to stay ripped at 49. I followed IF for the first 3 months when I worked out in the evening. I also skip breakfast on treat days so I can eat a whole lot of food that evening!
3. Remember that there is a difference between healthy fat and unhealthy fat. Therefore, you need not give up fats altogether. Nuts, olive oil, etc. can be added to your diet as they come in the healthy fat list. Healthy fat is important because it helps control the level of insulin in your body. Note that insulin level is related to belly fat directly. Hence, healthy fats are actually a blessing in disguise. You will have to maintain a certain level of it, though, as too much of anything is bad.
"I like a challenge, and someone telling me that it wasn’t possible was just the kick I needed to see if it was possible. So I started eating healthier—really focusing on figuring out what foods I had an intolerance for, were causing me to bloat, or were just notoriously hard on the gut—and learning how to get more out of my workouts. One trainer pointed out to me that I wasn’t doing situps in a way that was as effective as it could be, and to this day I still think of his advice (tilt my pelvis so my back lies flat on the floor!) every time I do core work.” —Dorothy Beal, @mileposts
Instead of copying the experienced bodybuilders, newbies would be better off if they took advantage of a phenomenon called newbie gains (a.k.a. beginner gains). There’s a brief phase in strength training where building muscle and burning fat at the same time is a better strategy than bulking and cutting. It’s the beginner phase. Thanks to newbie gains, beginners will build muscle fast even in a state of caloric deficit, provided that they train and eat right.

5. Engage in resistance training aimed at your abs. In addition to eating right and losing weight, doing certain types of exercises can help you achieve a better-defined abdomen, Singer says. "I'm sure everybody knew somebody in high school who had tremendous abs who ate whatever he or she wanted and had tremendous abs without working out," Singer says. "Most of us aren't that lucky." If developing a six-pack is your goal, doing exercises aimed at your abs can be part of a successful regimen. Such workouts would include weighted crunches and weighted sit-ups, he says. Cardio workouts are helpful for shedding pounds, but won't, on their own, lead to defined abs.
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.
How to: Lie on your left side with your legs straight and your right leg stacked on your left. Position yourself so your weight is resting on your left forearm and the outside edge of your left foot. Your elbow should be directly beneath your shoulder, and your upper arm should be perpendicular to the floor. Align your body so it forms a straight line from your neck to your ankles, and place your right hand on your hip. Lower your hips toward the ground a couple inches, then come back up to start. That’s one rep. Do 15 reps on each side.
During your weight-training workouts try to keep your rest periods to a minimum between each set. Rest periods between sets should be 30 to 60 seconds in length. With shorter rest periods between sets your heart rate will stay elevated throughout the entire workout. Again, this is just another simple strategy you can use to increase caloric expenditure and enhance fat loss!
AthleanX — If I were to recommend you ONE channel, this would be it. Don’t watch anything else, just listen to Jeff Cavaliere. His entire approach towards fitness is something that has come to resonate with me. There’s no bulking-cutting nonsense, pure focus on form, getting the maximum out of each exercise and a lifelong approach towards good, sustainable nutrition. If I wanted a few exercises to target a particular muscle group, this is where I go to first, learn them, try them out in the gym and invariably get results. There’s a ton I’ve learnt from Jeff and couldn’t thank him enough.
Let's come clean from the start: We're not here to sell you on the single "best ab exercise ever." Too many organizations and authors have tried that, and the profusion of "winners" out there can make it confusing—especially because the studies backing them are always limited in one way or another. A few years ago, it was the bicycle crunch. Then it was the traditional crunch. Then it was the pike, the plank, the roll-out... We could go on.
"But after having children and maturing, my body image has changed. I don’t run or eat to look a certain way, but instead to feel a certain way—happy. I no longer count calories or restrict what I eat. I focus on real food that’s minimally processed, and most meals include some sort of carbs (I really love potatoes), protein, and lots of veggies. All of that, coupled with higher mileage during more intense marathon training, has led me to how I look today. When I’m not in the middle of marathon training, I’m often five to 10 pounds heavier—and that’s totally okay.” —Michele Gonzalez, @nycrunningmama
The optimal caloric deficit when you are training 4 times a week is different than the optimal caloric deficit for merely losing weight. You must eat enough food to fuel your training and feed your muscles but still be in a state of a caloric deficit to keep burning fat. For further information on dieting for six-pack abs, refer to my other article entitled Six Pack Abs Diet: The Ultimate Diet Plan to Get Ripped.
The math is simple: keeping your calories down is a surefire way to keep your weight down. But make sure you don’t dip too low. Eating too little can slow down your metabolism, which can have adverse effects on your body. “It doesn’t know when the next meal is,” says Shapiro. Put another way: when it comes time for your body to burn off calories, it may hold on to them instead. Think of your body like a furnace. It constantly needs fuel intake to continue burning.
Building muscle and burning fat at the same time is the holy grail of bodybuilding but many people believe that it’s impossible. Here’s how it goes. Experienced bodybuilders first bulk then cut. Bulking is the period where they eat more calories than they burn (caloric surplus) in order to pack on muscle mass. Cutting is the period where they eat fewer calories than they burn (caloric deficit) in order to burn off the fat they inevitably gained during the bulk. The remaining muscle after bulking and cutting is their lean muscle gain.
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