How to use this list: Clayton suggests doing each exercise below for 30 to 45 seconds before every run. “This will fire up your muscles so they’re active when you need them most,” Clayton says. Clayton even demonstrates them herself, so you can nail the perfect form. You will need a mat and a set of sliders. Two hand towels or paper plates will work. too.
Tighten your abdominal muscles and protect your spine with the most effective ab exercises from the American Council on Exercise (ACE). Learn proper techniques and step-by-step instruction from America's Authority on Fitness. This large collection of exercises is also featured in complete workout routines that include full-body and at-home workouts. Whether you?re looking for beginner level training or advanced fitness programs, we have something here for everyone to target core muscle groups. Choose from a wide variety of lower ab exercises, standing trunk rotations, reverse crunches and more.

4. Be sure to eat enough protein. As you lower your calorie intake and cut down on processed foods and refined sugar, be sure to get enough protein, Singer says. "Prioritizing protein will help you maintain muscle mass," he says. Lean meats, skinless chicken and turkey, beans and lentils, tofu and soy-based foods, eggs, nuts and low-fat dairy products are good sources of protein. Your body breaks down protein into amino acids, which it uses to build muscle, according to Harvard Health. Research published in 2015 in The American Journal of Clinical Nutrition suggests that for all adults, consuming high-quality protein (from eggs, beef and dairy products, for instance) in combination with physical activity "represents a promising strategy to delay the onset of sarcopenia [a disease characterized by loss of muscle mass and strength]."
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

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