Muscles exert higher EMG tension when they are contracting eccentrically (lowering the resistance) versus raising it; but the problem with most exercises is that the amount of weight you can lower is limited by how much you can lift positively (concentric work). This exercise compensates for the problem by changing the leverage during the lowering (eccentric) phase of the exercise.
To do it:Get into pushup position with both hands on the stability ball directly below your shoulders (your feet can be slightly wider than shoulder-width apart to give you extra stability). Contract your abdominals and try to bring your body into a straight line from your neck all the way to you toes (your butt should not be sticking out, so contract your glutes and keep your hips down). Once you are stable, lift your right leg a few inches off the ground and hold for 10 seconds. Repeat on the other side. Try to do three sets of a 10-second hold, and then advance to a 30-second hold.
As easy as the models and athletes in our magazine make being lean and ripped look, we’ve got to be honest, it couldn’t be further from the truth. It’s hard, it takes time, and it demands an unwavering degree of discipline. In our on-going efforts to assist you in sculpting the body you’ve always wanted, we’ve laid out the gold rules to getting ripped.
How much time can these techniques save? A 2011 Spanish study found that men who trained with circuits achieved the same gains as those who trained with straight sets —yet their workouts were 42 percent shorter. But that's not to suggest you should hit the showers early. No, it means circuits and alternating sets can help you squeeze more total sets into the same sweat session.
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.
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.

Spend a lot of money on expensive supplements and food — There are plenty of (rather expensive) supplements like plant protein powders and vegetarian meal replacement shakes. You might have to substitute more of solid food for these supplements to hit your ideal macro goals. As a vegetarian, you’re also not going to get in a lot of BCAAs through food so you might have to supplement with them separately. I’m not the one to tell you whether this is a good idea or not. If you can afford purchasing fancy food and supplements frequently, up to you.

Do it: Lay face up on the floor with arms straight above your shoulders. To start, bring your knees directly over your hips and bend at the knee so that your calf forms a 90-degree angle with your thigh. Next, simultaneously lower your left arm above your head while straightening your right leg and sending it towards the floor. Pause, return to the starting position, and then repeat on the opposite side. Do 14 alternating reps to complete one set.
To do it: Stand with your feet planted 3-4 feet apart, toes slightly turned out, hands on your hips. Lower into a plie by bending your knees out over your toes and lowering your hips directly underneath your shoulders. Then, as your straighten back up, slowly lift the right knee up towards the right shoulder. As you go back into the plie, slowly return the foot to the floor. Be sure to move at a very controlled pace to really engage the obliques the entire time—on the way up and on the way down. Do 10 repetitions on the right side, then another 10 repetitions on the left side for a total of 20.

best ways to build core