The 8 Best Ab Exercises to Level Up Your Core Workout

Twisting in a plank position fires up the core and challenges your balance and stability. Holding a weight will work your upper body, too. If you're struggling to keep up your form, ditch the weights and try this move with just your bodyweight.

1. Begin in a plank position with your belly button pulled in toward your spin and glutes tight while holding a five-pound dumbbell in each hand. Keep your wrists stiff to protect the joints. Open your feet a little wider than hip-distance apart.
2. Lift your left hand to the ceiling, twisting through your entire torso — keep the motion smooth and controlled. Your pelvis will rotate, but keep it level without letting it rise or drop.
3. Bring your left hand back to the floor, and repeat on the other side. That's one rep.
4. Do three sets of eight to 10 reps.