Forget the useless facts, 19 of the MOST USEFUL FACTS you can know.

1. The width of one finger as you hold out your arm to the sky is roughly equal to the distance that the sun will travel in 15 minutes. Thus, 4 fingers equals 1 hour.
2. If you're going to hide something, hide it above eye-level. People never look up when they're searching for something hidden.
3. If you use a permanent marker on a dry eraser board by accident, you can write over it with a dry erase marker and then it wipes away
4. People will be inclined to liking you if you ask a favor of them. It's called the Ben Franklin Effect.
5. If the toilet starts overflowing, don't panic! Quickly lift the lid off, and push down the round rubber flap in the bottom. This will stop most of the water going into the tank.
6. Peeing after sex helps prevent UTI's. Also, when taking a pregnancy test make sure to take it first thing in the morning when your urine is at its most concentrated. This will yield more accurate results.
7. A US dollar bill is 6" long. Use it to measure objects quickly.
8. When reheating pizza, use a frying pan and cover it on the stove instead of cooking it in the microwave. Use low heat so the bottom does not burn, the cheese will melt and the crust will be crispy and it will taste like it was brand new, or better.
9. That almost anything around you is made by someone under time and cost pressure and probably isn't nearly as reliable as you think it is.
10. The amount of times you need to push down per minute during CPR is the beat of “Stayin’ Alive”.
11. Lefty loosey, righty tighty
12. Drinking A cold glass of water in the morning will wake you up better than a cup of coffee.
13. Never wash strawberries or any berry unless you intend to eat them right away or they will mold.
14. When in public, project confidence in yourself (without crossing the line into arrogance), and people will naturally be drawn to you in a positive light.
15. When you're looking for something in a room, look in the OPPOSITE direction you're used to reading. You're used to scanning left to right quickly due to reading, so scanning the opposite direction forces you to slow down and actually think/observe.
16. Odd numbered interstates run north and south. Even numbered run east and west.
17. You can stop itching from the likes of eczema or an insect bite with hot water, just heat it to as hot as you can tolerate and submerge the body part.
18. The easiest way to talk to someone is to ask questions about their life.
19. You can start a car with a dead battery (only if it’s a manual) by:

• Putting it in 1st or 2nd gear-while holding down the clutch
• Turning on the ignition
• Get someone to push the car to a brisk jog then abruptly let the clutch out.