Although the intervertebral disc is a remarkably versatile and strong structure, essentially acting as a shock absorber during everyday activities, sometimes the disc fails when there is a sudden, unexpected force (such as a fall, lifting, or other trauma), or due to ordinary wear and tear over time. And when the disc does get injured it cannot repair itself very well, which is one of the major reasons recurrent back pain is so common.
A regular routine of back exercises can prevent low back pain and/or reduce the severity and duration of any "flare-ups." Controlled, gradual, progressive back pain exercises can help the back retain its strength and flexibility. Also, back movement promotes the delivery of nutrients to spine, keeping discs, muscles, ligaments, and joints healthier.
Aerobically fit patients will have fewer episodes of low back pain, and will experience less pain when an episode occurs. Patients with chronic low back pain who do not work on aerobic conditioning are more likely to gradually lose their ability to perform everyday activities. Examples of low-impact aerobic exercises that are gentle on the low back include: Water exercises, Stationary exercise biking and Exercise walking.