“The bird dog forces you to keep your core stiff,” says Jack. “Lifting your knees off the ground just a couple of inches—as you do in this exercise—makes it even more challenging to keep your torso still as you switch arms and legs.” That means your hips and lower-back muscles, obliques, rectus abdominis (also known as the six-pack muscles) are working together to keep your spine stable.
“I alternate between all-out effort sprints (30 to 60 seconds) and walk/jog as a recovery until I feel fatigued. Intensity is key. Abs work as stabilizing muscles during a sprint, so the harder I push myself the harder my abs will work! Plus, there’s no equipment required, and I get a high calorie burn and full-body workout done in very little time. (I tell myself I can do anything for 30 seconds.) Depending on how I feel, I’ll either add this to the end of a routine or make it my entire workout, two to three times a week.” —Suzanne Cover, @suzannecover
When guys talk about six-packs, they are really talking about one muscle, called the rectus abdominis. “The rectus abdominis runs from our lower ribs down to the top of our pubic bone, and fibrous bands of tissue break up the muscle along the way to give us the six-pack look we all desire,” explains kinesiologist David Cary, C.P.T., a T4 Coach at Equinox in Chicago. So, if you want to sprout six-pack abs, this is the muscle you need to work.

While staying hydrated is important no matter your fitness goals, you absolutely have to drink up if you want to see the abs you’ve been working so hard to sculpt. Your body is two thirds water, and you want to make sure it stays that way, Delbridge says. Keeping your water levels up prevents water retention and helps your body rid itself of toxins and excess salt to reduce boat. And if you’re puffy, your abs aren’t going to look as chiseled as they could. When you hit the urinals, your pee should be pretty much clear.

Body Recomposition — This essentially refers to losing body fat and building muscle at the same time. Now, conventional wisdom dictates that you cannot do both at the same time . This however, is not entirely true. You can lose fat and build muscle at the same time if you are in a positive nitrogen balance (I just take this to be sufficient protein intake) OR you’ve never trained with weights before. When you first start lifting, your body is not used to the amount of wear and tear (shock) resistance training causes to your muscles. Because of this, your body amps up it’s testosterone (muscle building hormone) production to make sure it can keep up, resulting in some awesome newbie gains. These are highly accelerated periods of muscle growth right after you start training. It’s often said that the muscle you gain during your first 1–2 years of training is more than all of the muscle you can pack on in subsequent years combined. Seeing these quick gains is great as it’s extremely satisfying and motivating as a newbie.
This is exactly the type of article I was looking for. I’m female 5’1” and a runner. I weighed 115 until I started at the gym and now I’m about 118 but like the way I look better now because everything is tightening and I can already see some definition. I don’t have a lot of body fat but particularly I have a very thin midsection. I don’t eat clean but I do keep track of my calories and keep a balance. Honestly I don’t want to be any thinner and don’t want to lose my curves by losing any weight but I want abs! Any extra weight I carry on my lower body (which is why I run!). But I want abs without having to cut out my iced coffee! So as long as I keep up with my calories and keep a low body fat I can still get abs? I am ab training about 3 times a week. Sorry for the book! Lol! Just blindly trying to reach my goals on my own!
"Most guys neglect their obliques in favor of their six-pack muscles, and that's a mistake," says Jack. "Your obliques not only support your spine, but they also help your abs work together with the muscles of your hips and lower back to explosively rotate your torso." That means you'll be able to lift heavier loads on every exercise, while adding a ton of rotational power to your tee shot and Hail Mary pass at the same time.
To do it: Stand with your feet hip-width apart and pressed firmly into the floor and hold a medicine ball (or other similar weighted object). Brace your abs in tight (as if preparing for someone to punch your stomach) and use your lower body to start the movement by bending your knees, sitting back into your hips, and reaching the ball down across the outside of your left leg. Stand up, swinging your arms across your body and up to the right while pressing your hips forward. Do 10-12 reps going from left hip to right shoulder, and then repeat on the other side.