Ares headcannon: if he can't sleep at night because of nightmares or because he's jittery or just not tired or whatever, he'll pace around his room at night. Since Athena is a light sleeper, he'll wake her up and get hell for it in the morning. Honestly, he can't help it and feels sorry.
yeah she gives him hell but sometimes she feels sorry for him bc sometimes she can’t sleep either and they’ll chill together maybe watch a movie or play some games until they fall asleep
(also i highkey relate to ares bc i pace around all the time)