There’s nothing so dangerous as sitting still. You’ve only got one life, one youth, and you can let it slip through your fingers if you want to; nothing easier. Most people do that.
Willa Cather, American Writer

I’m not familiar with her work but this quote hit different. Rest is needed, but it’s important to make the most of your life. I don’t think she meant literally sitting still, I took the quote to mean you should always have your eyes on loving and serving others and to get up and see the world, take a walk, hike, kayak, bike ride, do something!