Try to get movement in whenever possible. Take the stairs, pace around during calls (when you do not share an office). Get up and stretch between "work segments

Try to get movement in whenever possible. Take the stairs, pace around during calls (when you do not share an office). Get up and stretch between "work segments". And my favorite new tool: A skipping rope that I use whenever I feel too tired/ like my concentration is breaking / I do not want to do, what I currently have to do. (Mind you, there is a storage room big enough next to my office room that is right above the underground garage, so I will not disturb my colleagues.). Before that, I used to climb the stairs to the top of my office building (five floors) and down to "unfog" my mind and get some energy back.