I will tell you few things about depression, not from a professional perspective, as I am not a psychologist, but from a personal one; from my experience and from people close to me.
Nowadays the gyms are full with people with headphones on. There is no community spirit anymore. "Every man for himself!"
An inversion is a body position where the heart is higher than the head. It is mostly used in yoga and it has a lot of benefits. Some benefits bring us back to the childhood, some are purely physical.
As Personal Trainer I can say that I have influenced, changed and touched some lives. If it was changing the body shape, the mood or the mindset, I have had clients along the way that told me, they felt the difference.