Besides the productivity boost (and I know you already mention a boost to your well-being), this is one of the simplest yet effective things you can do to improve your cardiovascular health. I had a heart attack at 40 and 30 mins a day is the minimum recommended, so 60+ is great.

But back to your productivity angle: Stephen Wolfram wrote about the productivity benefits (for him) of walking while working: https://writings.stephenwolfram.com/2019/02/seeking-the-prod...