Coffee and Nicotine
Some wag once said these were the two main food groups and given my recent intake, I’m inclined to agree.
There is something to having that caffeine injection first thing in the morning before I take the mutts out for their morning constitutional and I never really get firing unless I have that little white cancer stick burning away as well.
Aside from the obvious health issues, you have to take a step back and consider how much you are drinking in. I had a health check up recently and obtained a clean bill of health - blood pressure is fine, heart is fine, lungs are fine - but I did notice that I was getting periods during work when I just had to get up and stroll around, which my son characterises as “pacing”. That my friends is too much caffeine.
Working at home, it is all too easy to overdo the cups of tea and coffee so this may sound a little stupid, but watch how much you are drinking - especially if you have fresh brewed coffee. I now only drink a cup at 11am and 3pm just so I do not overdose on the stuff - a far cry from drinking non-stop and wondering why I was bouncing off the ceiling by midday.
Remember when you are writing, your brain is being exercised and your imagination is the main tool at your disposal - anything that adversely affects either is what is known in the trade as “not a good thing”. Take a regular break and exercise away from the keyboard and the chair, but watch the caffeine - it does things to you!