It's good to be in positive energy balance when you're
a. recovering from the flu.
b. beginning an exercise program.
c. a fully grown adult in good health.
d. trying to deal with stress.

Being in a good positive energy balance helps with many things including recovering from the flu, repairing from an old injury or broken bone, growing while you're a child or even while you're pregnant. Having positive energy can also make a difference on your metabolism, hormones and overall mood.

The answer to your question is  it relieves stress and boredom.  the rest of the answer choices would be long term.