I think if we save Bitcoin for a long time there is a chance of its fluctuated nature. So if we invest bitcoin instead of saving this will good. If we are risk taking personality we should save it for a long time in wallets. There are so many reasons to save it for a long time if we have huge amount of bitcoin and its price goes up there is a chances of growth in profits.
There is no other better option of making a lot of profit with minimum risk level other than holding your Bitcoins for as long as you can. You can sit calmly while keeping your Bitcoins in your wallets and you will observe that the worth of your Bitcoins is continuously increasing with each passing day.