This week's facts include:
Being in a good mood while getting a flu shot can boost its effectiveness. A study from the University of Notthingham found that of all the factors researchers looked at, a positive mood is the only factor that was associated with a higher level of antibody with an 8 to 14% variance. Boredom can be good for you! So, maybe you're one of those people who would rather staple their tongue to a piece of paper than be bored, but it turns out that boredom has many benefits (beyond not leading you to poke holes in your body). Smiles can be used to convey twice as many indifferent to unhappy emotions as they can happy ones.