i know that when i wake up after 1-2 nights after gettin high, i feel like im waking up with a hangover and my heads all fuzzy. When i havent smoked weed for a while i wake up feelin fresher and sharper and i can nromally realise that i had a dream. But it also depends on how deep the dream was, for example i had a smoke on friday night and personal life had me feelin uneasy from friday to today, and ive had some fucked up dreams. I woke up screaming on friday night some time in the morning, it was really dramatic, i remember thinkin shit i need to try n remember what that was about' but i think after 5 seconds i fallen back to sleep coz i never really even tried to backtrack what i had just dreamed