In the spirit of those annoying, addictive, you-know-youre- reading-them-even-though-you- wish-you-werent Facebook notes popping up everywhere, Health.com presents its list of 25 random things you might not know about the human body, nutrition and exercise, sex, sickness, and health. Go ahead: Pass it on to your friends.

1. Rinsing your nose with salt water can help keep you healthy and ward off allergy symptoms.

2.Dogs can smell cancer and low blood sugar.

3.People who enter their home through a door near the kitchen tend to eat 15% more than those who use the front door.

4.Youre more likely to have a heart attack on a Monday…or up to three days after youve been diagnosed with the flu or a respiratory tract infection.

5.You cant get a tan from your computer screen. No matter what this website tells you.

6.Obese people spend $485 more on clothing, $828 on extra plane seats, and $36 more on gas each year than their thinner counterparts.

7.Smokers are four times as likely to report feeling unrested after a nights sleep than nonsmokers, and are 70% more likely to develop hearing loss.

10.Your kitchen sink is dirtier than your bathroom: There are typically more than 500,000 bacteria per square inch in its drain; the faucet, basin, and sponge are crawling with germs as well.

11.Four out of five doctors dont get enough exercise.

12.Strawberries and baking soda can whiten teeth, garlic can help treat athletes foot, and honey can soothe a hangover.

13.Using a food diary can double a persons weight-loss efforts.

14.Regular exercise can lower a womans cancer risk—but only if shes getting enough sleep.

15.Watching yourself run in a mirror can make a treadmill workout go by faster and feel easier.

16.Third-hand smoke—the particles that cling to smokers hair and clothing and linger in a room long after theyve left—is a cancer risk to young children (and pets).

20.Vitamins dont seem to help guard against cancer or heart disease.

21.Some men experience pain, headaches, or sneezing as a result of ejaculation.

22.Germ-killing wipes can spread bacteria from one spot to another if you reuse them.

23.Almonds, avocados, and arugula lettuce can boost your sex drive and improve fertility.

24.The newest and most expensive drugs on the market may not be the best or the safest.