If one is working in a place where they have a chance to get extra jobs, then there is a need for them to add something up to their hustle and make that extra income. Such type of hustle is not for people who work straight 8 hours daily, as they will not even have enough time for themselves to rest, talk more of doing other things.
The best side hustle nowadays is to learn an online skill, which you can even do while working and still be rendering services to those who need it, and still be making that extra cash, which you can use to either accumulate bitcoin or foot other bills.