Here are 20 abdominal exercises(abs) techniques to help strengthen and tone your core muscles: Crunches: Lie on your back with knees bent, hands behind your head, and lift your shoulders off the floor, contracting your abs. Reverse Crunches: Lie on your back with knees bent, lift your legs off the...

The term "navel" refers to the small, central scar on the abdomen, commonly known as the belly button or belly navel. The navel is the remnant of the umbilical cord that connected a baby to its mother during pregnancy. It is a small indentation or protrusion on the abdomen, and...