After buying my first bike I've probably not missed a single day without sitting on the bike.
I've been probably riding 10km per day after being somewhat out of shape.
Over the days I've noticed that I lose my breath faster and faster, and my muscles seem to stiff up.
This does not hurt or feel like "postworkout"-soreness, but more like passive cramping.
That is probably the best way to describe my problem. I'll probably see a doc anyways but I want some more input on that