15 Simple Yet Effective Ab Exercises You Can Do at Home

There's nothing wrong with sticking to the classics. This old favorite is easy to do anywhere.

• Lie face-up on the floor with your knees bent and feet flat on the floor. Put your hands behind your ears, elbows pointing straight out to the sides.
• Focusing on your core muscles, lift your head and shoulders and raise up until your head, shoulders, and back are off the floor. Keep your belly button pulled in.
• Lower back down. That's one rep.