[C3T1] - Bad backs

A. pregnancy.

B. osteoporosis.

C. lack of exercise.

A. pain killers.

B. relaxation therapy.

C. exercise routines.

A. it is usually better at self-repair.

B. a back injury is usually more painful.

C. its response to injury often results in more damage.

A. for a maximum of two days.

B. for extreme pain only.

C. for pain lasting more than two days

A. is a major source of back pain.

B. worsens existing back pain.

C. reduces the effectiveness of exercise.