Sitting down too much. It took four lumbagos in three years to finally get the point.

I don’t write as much anymore unfortunately, but the huge upside is that, after two decades of not being able to do so, I can finally squat again with heels planted without tipping over. A proper Slav squat. Practicing this almost daily for nearly a year has improved my foundational skateboarding skills significantly. And I simply feel more youthful too.