Exercises to improve your core strength

Articles

Content
Abdominal crunch
Bridge
Single-leg abdominal press
Single-leg abdominal press variations
Double-leg abdominal press
Double-leg abdominal press variations
Quadruped
Modified plank
Modified plank variations
Side plank
Superman

To improve core strength of many muscles at one time, try a bridge, sometimes called a back bridge or a glute bridge:

Lie on your back with your knees bent (top photo). Keep your back in a neutral position, not arched and not pressed into the floor. Try not to tilt your hips. Tighten the abdominal muscles.
Raise your hips off the floor until your hips line up with your knees and shoulders (bottom photo). Hold for three deep breaths.
Return to the start position and repeat.