Dear friends

I have two questions regarding door and window in the bedroom:

1) In the Essentials, there is an illustration of a bedroom with the information that one should “not sleep directly in the flow from the door”. Is this only relevant when one sleeps with a completely OPEN bedroom door (Qi would not move through a closed door, right)? How would it be with a bedroom door that is only slightly open during the night?

2) In Level 1, Marie mentions that Qi does not come into the house from windows, but it could leave the house through windows. Therefore, does it matter if one sleeps with an OPEN / partially OPEN bedroom window?

I am asking this questions because my bedroom benefits from some air exchange during the night (due to temperature and humidity), and I have no AC in the room.