Me: "Hey, I worked out this morning."
Co-worker: (gives me an evil death stare) "I was only awoken nine times last night by the baby. Nine times. Every hour or so. Now we're in a cycle where my wife is so tired she can't hear the baby crying, and then the next night I am so tired that I can't hear the baby screaming and back and forth. But it's fine. It's really fine.
Me: "One day I'm going to have children and look back on this and think, 'what an ignorant childless person I was.'"
Co-worker: "Having children is a staggering life change. But good job on working out."