You should always carry a needle in your pocket and this is the reason why
3 How to use the needle
Boiling a needle on high flame is one possible way but don’t forget to clean it after that. You could also rub it with alcohol which is the best possible way to sterilize objects. Now prick all ten finger tips with the needle as close to the nail as possible. It should also be done as fast as possible. You can squeeze the fingers if you don’t notice any blood flow. Once the blood resumes flowing from the fingers, the victim will regain consciousness.