You’ve probably already gone through a night by now but I found that after getting pain and/or tingles in my lower back from doing double heavy shifts in my internship, putting an extra pillow either under the arch of my back, or between my knees if sleeping on my side, did a lot to make it hurt less both while trying to sleep and when waking up.
There’s variety within any profession like this, at many points in history it hasn’t been the norm for normal people in urban settings to cook their own food or have cooking facilities at home, instead they purchased food from people whos job it was to cook.
But there would still be a difference between a business serving everyday people and personal chefs/cooking staff.