Work-life balance: https://en.wikipedia.org/wiki/Work%E2%80%93life_balance
Maybe you could start a 20% hobby project at work on their tab. "Why companies lose their best innovators (2019)" https://news.ycombinator.com/item?id=23887903
Hypothesis; it's probably normal and healthy to pursue different biomechanical activities when not working (possibly regardless of tech career or not)