@kwendy Sadly, I grew up visiting doctors to the point it was effectively useless or almost detrimental (got sick many times after visiting doctor, when I wasn't sick before). Which cost quite a lot even after health insurance. I also never really understood what it meant to go to the doctor until after coverage lessened.
So, now I'm visiting doctor for only emergencies because of cheapo health plan.
Anyway, I appreciate your input. I assume what you say is at least mostly true. That said, the stretches in this chapter have seemingly helped alleviate (and identify) an upper back problem I have. Nothing serious, but it's a numb sort of feeling there when I slouch forward/ look at phone too much.