What is bridging (feet flat)?

Bridging

1. Lie on your back with both knees bent. Your knees should be bent about 90 degrees.
2. Tighten your belly muscles by pulling in your belly button toward your spine. Then push your feet into the floor, squeeze your buttocks, and lift your hips off the floor until your shoulders, hips, and knees are all in a straight line.
3. Hold for about 6 seconds as you continue to breathe normally, and then slowly lower your hips back down to the floor and rest for up to 10 seconds.
4. Repeat 8 to 12 times.