Bridge wall walks build greater flexibility throughout your entire back as well as functional strength.
The exercise itself is fairly simple. Facing away from a wall, simply stand about 2 or 3 feet from the wall. Placing your arms overhead, lower back until your hands touch the wall. From here, lean on your hands and then walk your hands down the wall. Walk your feet out as necessary to avoid exceeding your current level of flexibility. When you reach the limit of your flexibility and strength, walk your hands back up the wall and your feet back in closer to the wall until you have returned to a standing position.
Eventually you will be able to walk your hands completely down to the ground. As your strength improves, use your hands less and less for support, until you are able to lower to the ground and back up without the assistance of the wall.
As a side note, working this exercise in conjunction with weighted pike stretching is a very beneficial combination.
Yours in Fitness,
Coach Sommer