I read a thread at Reddit about people that have been in a coma. Most of the people said they had no idea of the time passed. No dreams, no nothing. Other peop

I read a thread at Reddit about people that have been in a coma. Most of the people said they had no idea of the time passed. No dreams, no nothing. Other people said they dream like during the night, but had less awareness of time. So not like when I sleep and sometimes feel that this dream is stupid/frustrating/repetitive and either I should wake up now or the dream should change.