While on a business trip in Chicago last month, I accidentally slept for 12 hours. I fell asleep at 9:30 p.m. local time and didn’t set an alarm, because I figured there was no way I would sleep past 7:30 a.m. Cue me waking with a jolt at 9:30 a.m., and only because housekeeping knocked on the door. I probably could have gone a solid 14 if left uninterrupted. https://messaging-custom-newsletters.nytimes.com/template/oakv2?uri=nyt://newsletter/f6fd35ad-fc62-4259-afd2-4a829d00082f&te=1&nl=nyt-parenting&emc=edit_ptg_20191106?campaign_id=118&instance_id=13637&segment_id=18556&user_id=39be855d88b16ee34ba16600b6101964&regi_id=67756785