Is there a scientific backed study on the age old Chinese tradition called "ge lai"? How do you go about it? Is it only being practiced by Chinese?

From my understanding, "ge lai" is pretty much the practice of confinement. It is based on 3 beliefs that a new mother is (1) more prone to infection; (2) has lost a lot of qi, or life force, which she needs to recover (3) the mother’s pores become open, so she is susceptible to “wind,” which can cause illness To me, it's basically a time where mothers rest and recuperate after births, eating the right kinds of foods and observing some do's and don'ts. Generally, every culture has their own version of "ge lai" which pretty much centers on caring for the mom and the newly born baby.