The Germans are a strange people, as anyone can attest. Take the trains. At each entry door one finds the following image:
It took me a while to figure this one out. And then the insight came: in order to board a train, you need to pull your head into your shoulders, lean right back and then lift a leg to board the train. Quite a feat with some heavy baggage, either external to your body or as a result of devoted consumption of those ubiquitous Würste. I understand this approach does wonders for your lower back.