College Kids

My #5 neighbour's son is in college. Last night, a group of his friends come over and swam late at night. This morning when I woke up at 6 am, they were still at the pool side. I wonder why they do not need to sleep. It may be the excitement of friendship, gossips, sharing story or just plain showing off that young, strong men do not need sleep. Luckily, they were not rowdy. I wonder if they disturb other neighbours who sleep without aircond.