Even absent definitive scientific proof of its effectiveness, many healthcare programmes offer arts activity as a therapy or health intervention.

BBC: Ageing well: Can dance and art keep the mind and body young?

Resting, without engaging in physical activity, is generally the most important aspect of therapy to speed recovery.

FORBES: Could Intercostal Strain Affect David Wright's Opening Day?

Instead, GPs are encouraged to offer cognitive behavioural therapy (CBT) and structured group physical activity programmes.

BBC: The north/south divide on antidepressants

Obese and overweight patients with mild to moderate hypertriglyceridemia be treated with lifestyle therapy, including dietary counseling, and physical-activity programs to achieve weight reduction.

FORBES: More Evidence That Omega-3 Supplements Don't Work

When it comes to people, said Dr. Hsieh, it might be similarly effective to give the therapy in the first week after a heart attack, when stem-cell activity is highest.

WSJ: Nanotechnology Holds Promise for Heart Patients