Low back bridges are a simple, gentle way to strengthen the lower back while also targeting the hamstrings and glutes. This exercise should be done slowly without hyperextending the back.
1. Lie on the floor with your knees bent. Arms at side.
2. Lift hips off the floor, keeping body in straight line from knees to head.
3. Hold briefly, lower hips to floor. Repeat 10-12 times.