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.
Pre-Workout [Morning — 6.30AM, Evening — 6.30PM] — ½ scoop of Whey. This ensures you don’t lose muscle mass during your workout. On Cardio days, I consume nothing else but on Weight Training days, I have 1 slice of brown bread spread with Unsweetened, Natural Peanut Butter topped with 1 banana. It’s a solid combination of complex carbs and fruit sugar to fuel your workout.
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. 
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.
But you can still go wrong. Because your feet are hooked, it's all too easy to pull through your thighs. Nor do you want to go all the way down to rest on the bench between reps; stay well off it. If you're not feeling a wicked burn, drop all the weight, put your hands on your belly, and really focus on the contraction at a slower pace. You can also introduce a cross-body movement, angling your elbow to the opposite-side thigh, to better engage the obliques.
Lie faceup with feet flexed in the air so body creates a 90-degree angle and arms are rested palms down at sides. Use core to pulse legs straight up towards ceiling, lifting butt off floor and pushing weight into hands. Think about stamping the bottom of your shoes on the ceiling and avoid using momentum to swing legs forward and up. Lower back to floor and repeat.
The Torso Track comes out as number 5 for effective ab exercises, but this is one of my least favorite exercises because it can cause lower-back pain, particularly if you roll out too far. In fact, in the ACE study, researchers found that a significant number of subjects reported lower-back pain, so you may want to skip the expense, and discomfort, of this one and choose other exercises that can target the abs with equal effectiveness.
So why so much chest, back, and arms work? Ironically, showcasing your newfound six-pack won't be just about the abs. By building up your entire upper body, you’ll create more shape that will help define the midsection. Your volume of muscle building will also increase your metabolic rate, helping you burn more calories in the process. Remember, it’s all connected. You'll thrash your abs three days a week along with some interval cardio activity for 30 minutes, and bang out some other muscle groups or hit a second helping of arms with whatever time you have left. Your other three days per week will be dedicated to chest, back, and arms exercises, so that your upper-body mass grows—increasing the V-angle and minimizing the chance of having a belly.
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.
The Single Leg Bridge Exercise is a good way to wrap up your core workout in order to keep your core strong and balanced. The single leg bridge is a bit more challenging than the basic bridge exercise. It targets and strengthen the gluteus maximus and hamstrings, but done properly, it is also a terrific core strengthening exercise that targets the posterior chain and the back of the body.
When you're doing exercises to strengthen these muscles, think of the abs and core as one unit. Even when you do exercises that recruit more of one muscle than the others (for example, side planks that really fire up the obliques), you'll notice that you still have to engage your entire midsection to do them right, which is proof that these muscles are never working completely alone. It's important to show equal love to all of the muscles of the core so that this unit can power itself properly from all angles.

"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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