Wacky health boosters that work!

Think you've heard all the health tricks experts have to offer? Not so fast! These surprising tips make you healthier and happier too

- Gabrielle Lichterman

Dodge spring colds by looking at this

Sure, you know that regularly washing your hands helps you avoid a pesky spring cold. Also smart: Do a quick online image search for "sneeze" on your smartphone, tablet or computer. Unexpected as it sounds, Canadian investigators say that seeing a photo of someone sneezing or blowing their nose sends a signal to your immune system that a threat may be lurking nearby. This triggers a 23% increase in the virus-fighting protein interleukin-6.

OR CUE UP JUDGE JUDY!

It may be hard to believe, but watching TV programs that highlight people's mistakes (such as Judge Judy) reduces your risk of experiencing coughs and sniffles, say Canadian researchers. They explain that hearing about other folks' big blunders makes your own issues seem small in comparison. This lifts your spirits, an effect proven to bolster your immune system.

Saying 'ding!' helps you find your keys faster

Misplaced your car keys? Spot whatever you're looking for faster by saying "ding!" before you search. Swedish scientists say sounds we associate with alarms excite areas of the brain that manage visual information, making them more effective at helping you search.