if I am awake after 16-18 hours without doing much, I get pretty lucid in the mind and the lucidness keeps growing until potential meltdowns are popping up everywhere and it feels like you are skating on ice and have to put yourself to sleep.
maybe i could handle being awake 24 hours on a double work shift without being concerned too much for thought communication discipline because of the demand of physical adrenaline for such a task.
for me, if i am awake after 24 hours, I would have to make sure I do not start making appointments, creating difficult goals, and sign up for things i know i will not follow through on, before finally crashing from mind and body fatigue.