[Rhino55]

This needs to be reported as an invalid story to HN.

This is a case where the submitter has not read the article. The abstract clearly states that the intervention is NOT exercise. Rather it is "encouragement" to exercise. Basically they're nagging you to take a walk around the block.

So I'm not surprised that nagging a depressed person to go to the gym helps in any way, shape or form. It's pretty sad that someone would do this study, really.

Regular exercise is, in fact, good for the body, heart, and brain. I would get at least 45 minutes of exercise a week, although I've heard that more is better.