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.
When it comes to working the core, many people focus on abdominal muscles, and neglect their obliques (or what you may know as “side abs”). But, says Barrett, these clandestine muscles are just as important: they “keep everything tucked in.” To get a good oblique workout in, head to the pulley machine and start doing some Paloff presses. If you don’t know how to perform the exercise, read our comprehensive guide on mastering the move.
To do it: Assume a push up position, making sure your body forms a straight line from your shoulders down to your toes. Raise your right hand and left leg out to form a straight line with your body, hold for two counts, then return to plank position and repeat with the other arm and leg. That’s one rep. Holland recommends doing 2-3 sets of 10-20 reps, several times per week for best results.
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.
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.
The reality isn't that simple, experts say. The answer to whether it's possible for someone to develop abs without adhering to a diet or by simply cutting back on calories is "maybe," says Evan M. Chait, a clinical nutritionist, physical therapist and acupuncturist based in Ramsey, New Jersey. He's a co-founder of the Kinetic PT and AcuWellness America centers. Anyone can cut calories and lose weight, Chait says. Dropping fatty pounds from your midsection can reveal the abdominal muscles that everyone has. "Six-pack" isn't a physiological term; rather, it's a shorthand way to refer to the rectus abdominus, the outer band of stomach muscle connecting the rib cage to the pelvis.
“For me, getting a six-pack was about paying attention to what I was eating and lifting heavy weights at CrossFit. I do have a semi-strict diet, and I loosely count macros (focusing on daily carbs, protein, and fat intake rather than blindly counting calories) to stay balanced and on track. It sounds like a lot of work, but it really isn’t. Eventually, it just became a part of my lifestyle, and it’s something I enjoy doing. I even started a custom meal-plan business based on macros because I had such great results!” —Tina Haupert, @carrotsncake