When I was starting to get noticed as an actor in the 1970s for something other than the third cowboy on the right who ended up dying in every movie or episode, Burt Reynolds was the biggest star in the world.
Monotony collapses time; novelty unfolds it. You can exercise daily and eat healthily and live a long life, while experiencing a short one. If you spend your life sitting in a cubicle and passing papers, one day is bound to blend unmemorably into the next - and disappear.