These are tips from Quora users on "small facts that might save your life one day." Chris Ritter/BuzzFeed 1. Don't drive when you're sleepy. Tap to play or pause GIF Tap to play or pause GIF excusememe.com / Via quora.com Crashes caused by dozing off at the wheel have the highest fatality rate of any kind of car accident.[source: Quora] 2. Don't turn your back on someone with a gun. Tap to play or pause GIF Tap to play or pause GIF Comedy Central / Via amazon.com It's a lot easier for someone to shoot you if they don't have to look you in the eye.[source: Quora] 3. For bikers/cyclists/runners/pedestrians: Don't stop in a driver's blind spot. quora.com Just because you can see a car does not mean they can see you.[source: Quora] 4. Resist the urge to flip someone off while you're driving. Tap to play or pause GIF Tap to play or pause GIF PBS You never know when the other person has an insuppressible case of road rage to unleash on you.[source: Quora] 5. Look both ways when crossing the street, even if the "walk" sign is lit. Tap to play or pause GIF Tap to play or pause GIF Great American Films If you've ever driven in a high-pedestrian traffic area like New York City, you know the level of concentration it takes...and you should also assume that most drivers are operating at an even lower level.[source: Quora] 6. On a related note, don't talk on the phone or text while walking. Tap to play or pause GIF Tap to play or pause GIF Fox The human brain can not multitask, people![source: Quora] 7. If someone has a concussion, elevate their head so that fluid doesn't build up in their brain. Carline Jean/Sun Sentinel / MCT Lift the head slightly, about 20-30°. However, if you suspect a spine injury, it's important to not move the injured at all.[source: Quora] 8. Always carry maximum-strength antihistamines with you when hiking, camping, or partaking in any outdoor activity. Tap to play or pause GIF Tap to play or pause GIF EMI/Capitol You never know when you'll get stung by something you didn't know you were allergic to.[source: Quora] 9. In a wilderness survival situation? Breathe through your nose, not your mouth. Tap to play or pause GIF Tap to play or pause GIF pacsafe.com Breathing out of your mouth expends more energy, and you'll lose moisture faster.[source: Quora] 10. If you're in a situation where you have no water source, try your best not to eat. Tap to play or pause GIF Tap to play or pause GIF Lionsgate Eating will just make you thirstier. You can survive 3 weeks without food, but only a few days without water.[source: Quora] 11. If someone has been stabbed or impaled with a sharp object, don't pull it out (unless it's blocking an airway). Tap to play or pause GIF Tap to play or pause GIF HBO Pulling out the knife will greatly increase the rate of blood loss. You should be doing whatever you can to prevent blood loss.[source: Quora] 12. Check the windows and back entrance locks after strangers have been in your home. Tap to play or pause GIF Tap to play or pause GIF CBS It's definitely a worst case scenario, but someone could easily unlock a window while in your home with a sinister plan to come back later.[source: Quora] 13. Resist eating the snow if you are at risk of hypothermia. Tap to play or pause GIF Tap to play or pause GIF wildography.co.uk Your body will expend a lot of energy and lose too much heat while attempting to melt the snow in your body.[source: Quora] 14. Do not inflate the lifejacket while you're still inside the plane. quora.com You'll have much more trouble running/walking out of a sinking plane if you're also floating.[source: Quora] 15. Always keep money in your shoe soles when going on a run. jaminnov.com Just in case you need cab money, first aid, or a bottle of water.[source: Quora] 16. Know how to give CPR and mouth to mouth resuscitation properly. Tap to play or pause GIF Tap to play or pause GIF gifak.net If someone's heart stops, they are much more likely to survive if given CPR correctly. But recent studies also show that untrained bystanders giving mouth-to-mouth does not improve survival rates. So skip the mouth-to-mouth for rapid, chest-only compressions, which can be more easily administered by people who are not professionals. 17. If you know you're going to be in a crowded space, take note of the exits. Shutterstock In case of fire or some other kind of disaster, people will always try to go out the door they came in, causing a jam. [source: Quora] 18. Have a plan for when your car brakes fail. View this video on YouTube youtube.com Start with pumping your brakes to alert the person behind you, use your parking brake, and shift your car into a lower gear. Watch the video for complete details.