Badminton and anti-depression

While playing badminton with kids today, I came up with an idea about depression or treatment of it. If you're an artist, how would you draw a picture of a very depressed person, or as an actor, act as a poor depressed fellow? He must be drooping his head, closing or barely opening his mouth, with a sad expression. If you want to cheer him up, what would you like to see him behave? Just the opposite, raising his head, opening mouth, smiling. Well, the three elements representing the opposite of depression are naturally satisfied with some entertaining sports such as badminton and kite flying. Think about it. You must look up to play (which, incidentally, also benefits your neck), and open your mouth to relax the skin and muscle under the chin. If the mouth is open like that, it's hard to have a sad facial expression even if you want to. Needless to say, any sport for entertainment (as opposed to competition) is generally good to mental health.

In psychology, the term suggestion means "the process of inducing a thought, sensation, or action in a receptive person without using persuasion and without giving rise to reflection in the recipient". I think the upward head direction and open mouth serve as perfect psychological suggestion to move away from depression. Badminton, as well as flying kites, should be an ideal sport for those suffering from this mental ailment.

Disclaimer: This is only my hypothesis. Its efficacy or lack of can only be ascertained by good control studies.