The reason why people in their 20s are fine even if they stay up all night JPG

(1)The stamina that people in their 20s can play all night long is given to parenting.
(2)Ability, I, a mammal, think.

(1)Parrot 2020-10-14 154758
(2)I’m in my 20s, but I can’t stay up all night. 9
(3)Recommendation R Answer
(4)Maybe it’s because you don’t have to raise children!
(5)LD Mayonnaise OO 2020-10-14 171239
(6)I’m not in a position to marry.
(7)Parrot OO 2020-10-14 171402
(8)I see. Thanks for the answer. I’m going crazy.