Breaking down why alcohol's impact shows up more in tomorrow's sleep than in tonight's fun.
4 min read
Alcohol's reputation problem in a lifestyle-tracking context is that its cost is delayed. The drinks themselves feel fine in the moment — the bill arrives the next day, in worse sleep, lower energy, and a mood that doesn't quite bounce back.
Alcohol can help people fall asleep faster, which is part of why it feels relaxing at night. But it disrupts the second half of the sleep cycle — the deeper, more restorative stages get cut short, and night waking becomes more likely. So a "big night" doesn't just show up as an Alcohol contribution to your score; it usually drags your Sleep score down with it the following morning.
THE FAD tracks both how much you drink and how often. An occasional heavy night and a steady pattern of moderate daily drinking can carry very different inflammatory profiles, even if the total weekly volume looks similar on paper — which is why the two are logged separately rather than collapsed into one number.
Not a sobriety app. The goal isn't to make you feel guilty about a night out — it's to make the next-day cost visible, so it's a choice you're making with information rather than one you only notice in hindsight.