I will recommend working while walking. Also learning while working. One needs a standing desk and a treadmill. Also, if you are watching an episode of a tv s

I will recommend working while walking. Also learning while working. One needs a standing desk and a treadmill. Also, if you are watching an episode of a tv show, randomly watching YouTube videos, listening to podcasts, etc., walk an hour or two during that time. That time won't feel 'wasted'. I can't point you towards any study. But intake of new knowledge and information is somehow better while I am walking.