I kill two birds with one stone and find a morning dog walk both helpful for fitness and inspirational. The author Judith Kerr said recently that she gets most of her best ideas when she's out walking. And she's a lot older than me.
I consider it a soft reset for my brain. Sometimes I start work early and then take a break when I'm getting stuck on a particular story. If the creative juices don't flow, get out in the fresh air. Especially when the sun's shining.