[dv_dt]

Math, independent sw projects etc. I have done and still do to some extent as another type of excercise. But for me, the paid sw work - even if unfulfilling, or maybe because it was somehow unfulfilling, left me with little energy for added activity in areas too close in some essential way. If math is a passion, do it, but think if it's a passion, escape, or a release for you.

On the other hand, taking a walk, meditation, travel - a range of options for movement based decoupling has been helpful to me.

Woodworking, car repair, home projects, knitting, arts and crafts - physical hobbies that require planning & thinking in a different domain that forces different time spacing is also helpful for me.