Carve a Strong, Chiseled Core With These 30 Ab Day Exercises

This challenging but simple move is so effective — and it specifically works the pesky lower ab area that can be difficult to target at times. You'll also take advantage of a nice quad exercise, which can help with running.

• Lie on your back with arms at your side.
• Pull yout navel into the spine.
• Lift both legs up at once until they are perpendicular to the floor.
• Slowly lower back down. Do not let your back arch up off the floor.
• Add a scissor kick vertically and horizontally up to a few inches (legs stay straight and move up and down or side to side and crisscross each other).