My first death experience was full a blown visit to Heaven in 1988. It was very life changing. I never fully returned to my body thus it gave me unusual abilities.
I have since found that through prayer and meditation I can have the same experience.
Since then I have spent 25+ years studying consciousness and the neuroscience of how it interacts with the physical body.
So what was heaven like? And how does one leave one’s body when not on death’s door?