same here especially in lectures my head just goes anytime i’m doing school or uni work or revision and i literally fall asleep i do the same when meditating i’ve tried to do it so many times but i just fall asleep and get so sleepy  and then i go to go to sleep and can’t and think of random things i need to research and stay up on reddit until 4 in the morning i think it is an adhd thing because we just get so bored we get sleepy because we need mental stimulation and reddit snd our phone gives us soo much dopamine