Some of the areas of the spine that become most problematic particularly as you age include the area at T12 of the spine, at the base of your ribs where it meets your lumbar spine at L1. Between  L5, at the top of your sacrum and S1 is another area that becomes inhibited through poor or no movement in that area.  A few simple stretches are key to assist you to become more agile as you age. 

Side bending daily is a must with a simple Trikonasana ( triangle pose, side bending  on both sides of your body) for a few minutes per day really helps to mobilize your lateral spine which is thought to be the first area to inhibit your movement as you age.  A lunge (one knee in a forward bend while the other leg is stretched back) works well to loosen up and awaken the pelvic floor and  to increase its mobility.  Another essential movement through the pelvic floor is in its forward and backward movement , practice the cat and cow pose( on all four, sagging and arching the back with your breath) or try sitting on your haunches on the floor with your hips splayed out and move your pelvis back and forth to activate the lower back muscles and spinal nerves and pathways of the pelvic floor.

John Gibbons says, the body is completely dependent upon the movement and mobility of the pelvic floor. He calls it the engine - the mechanics that makes all magical movement possible.  Live a vibrant life!