Stress is often associated with many negative side effects, but this video takes a slightly different tack, as mentioned in the blurb associated with this TEDTalk:
"Stress. It makes your heart pound, your breathing quicken and your forehead sweat. But while stress has been made into a public health enemy, new research suggests that stress may only be bad for you if you believe that to be the case. Psychologist Kelly McGonigal urges us to see stress as a positive, and introduces us to an unsung mechanism for stress reduction: reaching out to others."