At the end of every day do you still dutifully close every file and program window before shutting down your PC? That’s the standard way to handle things, but for quite a few versions of Windows, Microsoft has also offered the ability to use Sleep and Hibernate modes instead of just a regular shut down.
In Windows 10, however, Microsoft decided not to include hibernate with the rest of the shut down options under Start > Power by default. The good news is it’s easy to put the option back.