Some of my most productive days since I started WFH were when I took a 30 minutes nap in the afternoon. Taking a nap, a shower, then sitting down with a light snack to finish doing a thing is legit optimal.
a few days a week, I'll get up and climb sixteen flights of stairs after lunch. really gets the afternoon energy flowing for an investment of about eight minutes
I'm way too fat for that but a bike ride is within my means on a nice day like today. Takes me 10 minutes to get the energy rolling. However sometimes the nap is more effective, especially on days when we have 3 hours of meeting before noon.