@richrf,
Hi Rich,
Indeed time is a very interesting concept, Einstein was one person who actually proved just how interesting. It is affected by velocity, gravity, and seems completely alien when compared to the other 3 dimensions of width, height, and depth.
With respect to sleep, we could make a whole topic out of just that. 1/3 of our life is spent doing it...thats alot of time, but actually i think we have a little bit of a sense of time in the REM stage of sleep, where most(all?) dreams occur, but in the deeper stages of sleep it seems like time is lost completely.
When we are awake, we have a very keen sense of time. It seems at times of heightened perception, or awareness, time moves slow, although an exception to this is that some say time goes by faster when they are busy, or having fun. Time seems to be affected by lots of things.
I used to think all time was, is a passing of moments and nothing else, and it was impossible to imagine time not existing, but the physicists would say otherwise. They would say that before the big bang, during the singularity time did not exist, nor did space...which also seems impossible to imagine. How can a passing of moments not exist? The concept seems proposterous.
It does seem like there are different forms of time to me, but for now it all goes by the same name...just
time. Maybe that makes it more confusing also.