7 Core Exercises That Flatten Abs Fast—A Champion Bodybuilder Swears by Them
Do you ever wonder what exercises fitness pros do themselves to achieve their award-winning bodies? We have the answer. Body Network asked Mr. America himself, Jason Kozma, a Los Angeles personal trainer, High Performance Personal Training, to spill the beans on his top core exercises for strong abs. Here are seven he swears by.
Hanging Leg Raises
Why trainers love it: This move targets the lower abs, which are notoriously hard to hit. It also challenges grip and shoulder stability.
How to do it: Hang from a pull-up bar with your arms fully extended. Some gyms have arm loops expressly for this exercise. Keeping your legs straight, raise them until they're parallel to the ground (or higher for advanced). Slowly lower them down without swinging.
Trainer Tip: Avoid using momentum; go slow for max burn.
Planks (and Variations)
Why trainers love it: Planks build deep core strength and improve posture by engaging multiple stabilizing muscles.
How to do it: Forearms on the ground, body in a straight line from head to heels. Keep your glutes and core tight—don't let your hips sag. Hold for 30–60 seconds.
Trainer Tip: Progress to side planks, plank shoulder taps, or plank reaches for added challenge.
Weighted Sit-Ups
Why trainers love it: Adding resistance helps strengthen and grow your rectus abdominis (the six-pack muscles).
How to do it: Lie on your back with knees bent, holding a weight plate or dumbbell against your chest or extended overhead. Perform a sit-up while keeping control of the weight. Best to find something to anchor your feet or use a sit-up bench.
Trainer Tip: Keep your lower back from arching as you sit up.
Weighted Crunches
Why trainers love it: A focused, compact move that brings serious burn to the upper abs.
How to do it: Lie on your back, knees bent, weight plate either held behind your head or held at arms length above your face. Crunch upward, lifting shoulder blades off the floor, then lower with control.
Trainer Tip: You can do these on an exercise ball to get a greater range of motion.
Russian Twists (Weighted or Bodyweight)
Why trainers love it: Excellent for building oblique strength and rotational power.
How to do it: Sit with your knees bent, heels off or lightly touching the floor. Hold a weight and twist side to side, touching the ground on each rep.
Trainer Tip: Keep your chest lifted and back straight to avoid strain.
Dead Bug
Why trainers love it: Teaches core stability and coordination, great for beginners and advanced lifters alike.
How to do it: Lie on your back, arms extended toward the ceiling, knees bent at 90 degrees. Lower your opposite arm and leg toward the floor without arching your back. Return to start and repeat on the other side.
Trainer Tip: Press your lower back into the floor the entire time.
Ab Wheel Rollouts
Why trainers love it: One of the most challenging and effective moves for building total core strength and control.
How to do it: Start on your knees with hands gripping the ab wheel. Slowly roll forward, keeping your core tight, until your torso is almost parallel to the floor. Roll back to the starting position.
Trainer Tip: Don't let your back arch—core tightness is crucial, even if you have to shorten the movement. And if you enjoyed this article, don't miss 12-3-30 Walking Method: 20 Proven Tips to Lose Weight Faster
