What Is ‘Free Time?’

I’m confused about how to think about free time. What is ‘free’ time supposed to refer to? Could it be listening to a podcast that I WANT to listen to and also has to do with running a business ? If ‘work’ is somehow intertwined does that make it not free time? If I think of exercise as work. . . is that NOT free time? Is spending time with my kids free time or is it meant to be ‘me time?’ My work spills over so easily into my day. Also many things can feel like work except a few such as watching Netflix, reading a novel or hanging out with friends. Even doing self-coaching, while I may want to and it requires alone time, is related to my work and it feels like work to me. . . so is that NOT free time?