Guys can you give me some legit and real sites to invest my bitcoin to earn more! there were so many sites out there but i cant just invest on them because I dont know if they are real or just scam! And also do you think guys that those coin/bitcoin doubler are true?
Keep bitcoin in your pocket

. This will definitely increase their value, but not the quantity. Bitcoin themselves are already an investment. By investing money in them. You want to benefit from the same thing over and over again. Don't be greedy

. Because in the pursuit of profit, you risk losing what you have if you come across scammers.
Maybe you should concentrate on making money? You can always exchange them for btc.