I had an unexplainable experience last night while doing some intense meditative yoga. I was upstairs, standing up in my bedroom and close to my doorway (back facing it) while breathing in and touching my toes. My girlfriend was somewhat in front of me sitting down in a chair watching tv. I continued with my eyes closed, shutting everything out and concentrating on my breathing and my problem areas. While doing so, I completely lose myself in a black void and a white flash (while still focusing on my breathing and problem area) I snapped back to reality when I felt a presence near me and I opened my eyes. My girlfriend was hovering over me, and I was on the ground in a full stretch pose. She started asking me what happened? Am I alright? What am I doing on the ground?

I was utterly bewildered. I asked her what she was talking about? I was calm and yet I was vibrating/twitching, but I was in my stance on the floor, exactly where I 'remember' laying myself down while I was breathing/stretching.

She tells a different story. Apparently...I yelled some profanity as I started falling and then proceeded to hit the table and banged into the doorway multiple times before ultimately landing on the floor. Apparently this was loud. And apparently I should have been bleeding.

To me, that wasn't what had happened at all. I wasn't even "here" i was completely engrossed in thought, and yet I remember the black void and white light, and I remember actually laying myself down in that position before ultimately 'zoning out' before getting snapped back to 'reality' where my girlfriend was hovering over me.

I'm kinda at a loss to explain it. Part of me keeps on thinking of two realities happening simulteaneously as I started to escape the collective consciousness. And This thought re-occurs every time I recall the event. It's not as forceful as when 'im told something' but its vaguely persistent.

Any thoughts/suggestions/ponderings?

I almost think it has something to do with the physical state of the body. I messed up my hip and back ages ago, and when I try to center myself for meditation...i find my eyes literally drifting to one side or the other until next thing you know, im stretching like a madman..until, all of a sudden, I'm not. When i realize I no longer need to stretch, i start my meditation over, and my eyes stay centered.

I always felt the most...intense feelings while stretching the parts that were according to Doctors...unable to be fixed without invasive surgery. I feel no real pain while stretching. just the oxygen rush and the wahwahwah you described. Im half tempted to believe that with physical ailments that throw the body out of whack, it becomes harder to achieve a peaceful state of mind until some of those physical nagging issues are resolved.
I wasn't even able to sit cross legged or on my heels properly (before the stretching) because I lacked the mobility in my legs to even adjust them to that point. Now... I can almost instantly assume those positions. And with just a standard bowl of marijuana... i can almost instantly achieve a peaceful blissful mind. Next step is to remove the pot...but hey... one step at a time lol