I do not recommend to invest your Bitcoins or a part of it in some hyip sites,where is promised to double your Bitcoins in a couple of hours or in a short period of time.You can do some trading if you have experience,but I think it is better to store your Bitcoins in your wallet,that is the best investment.You will make some good profit on your Bitcoins in the future,when Bitcoins value will be doubled,because as we can see Bitcoins price gets higher and higher year by year.