You may not be completely honest when asked how's your day, and it turns out, overcompensating or faking happiness on a bad day can make your bad mood worse.

Photo by Mayselgrove.

Scientists found those engaged in "surface acting" or smiles and chipper voices when they actually had a bad day instead were more withdrawn from work. The result seemed to be worse for women, where one professor suggested it may be related to societal expectations of a woman to be more expressive in nature.

Those who created smiles by thinking positive thoughts, or what they call "deep acting", seemed to actually cheer up and their work output increased from there.

Positivity! It's a winner! Read on over at the Times!