How can flexibility training reduce the risk of back pain? a. it can improve coordination and prevents falls. b. it can improve the poor posture responsible for back pain. c. it can improve body composition, reducing load on the back d. it can increase endorphin levels that reduce pain.

The right answer is B.

Back pain, when it is of mechanical origin, is treated with relaxation exercises, stretching, bodybuilding of the spine and deep self-massage on the dorso-lumbar muscles to do at least 3 times by week, ideally every day.

Inflammatory back pain is less common (1 in 20 patients). It is the consequence of an underlying autoimmune disease that can worsen over time.

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.