Does anyone know why men developed deep voices? My teacher said that it developed for communication between men when humans were hunter/gatherers because deep voice soundwaves travel farther...
When you breath in oxygen does it instantaneously reach every cell in your body including your brain cells or does it take a little longer like a few seconds? Say someone took in a breath of oxygen,...
Is it weird that I have become scared of my own breathing? I mean i don't have anxiety just the idea of my chest moving bothers me sometimes. I don't know? kinda strange when I think about it.
