15 Simple Yet Effective Ab Exercises You Can Do at Home

This super-effective crunch variation will work both your upper and lower abs at the same time.

• Lie on your back on the floor, raising your arms and legs to a 90-degree angle.
• Engage your abs to lift both your shoulders and pelvis off the ground. Touch your fingers to your toes.
• Keeping your core engaged the entire time, slowly lower them back to the starting position. That's one rep.