At my R&D former job I could feel all the strands of thought kinda percolating in my head during most waking hours. This lead to some breakthroughs (for lack of a better word) as I was walking the dog at 10 am or taking a shower at 7 pm after a mtb ride. Really hard to quantify how many hours I worked per week but the flexibility was awesome & appreciated…one of the reasons I always try to be kind toward frontline workers in the service industry.