It's honestly not that hard once you treat physical health as being an _essential_ part of the human experience. It's not a chore, it's not a task, it's fundamentally important, it's what you are on this planet to do.
You "don't like it"? I'm sure you do loads of other things that you like even less (8 hour work day?) - society just supports those things more.
If someone told you that you could become a great chess player by playing 30 seconds a day would you buy it or would you think they were completely full of it?