Underslept Founders Make Drunk Decisions

Sleep researchers found that after 17 hours awake, your judgment drops to about what it would be at a 0.05 blood-alcohol level. Stay up past 24 and you clear the legal limit for driving. Dawson and Reid ran that study in 1997, and a thousand papers since have backed it. You wouldn't chair a board meeting after two beers. Plenty of founders chair one every week on less sleep than that.

Fatigue doesn't announce itself. It shows up as a slightly worse call on pricing, a shorter fuse with a co-founder, a clause missed in a contract you'd normally catch. None of it gets logged as a sleep problem. It gets logged as bad luck, a difficult person, a sloppy quarter. The cost is real and the cause is invisible, which is exactly why it survives.

There's a second cost that compounds. Tired leaders react. Rested leaders anticipate. The whole point of a founder sitting above the day-to-day is the capacity to catch a problem while options still exist, not after the last one closes. That capacity is the first thing fatigue takes. You keep answering email at full speed and stop noticing the thing that will matter in March.

Stress feeds the loop. It's among the top reasons people miss work with no physical illness, and it costs employers billions a year in lost output. For a founder the bill lands more concentrated: under-sleeping drives more under-sleeping, appetite goes, and the reserve you lean on in a crisis isn't there when the crisis arrives. I've written before about handling stress at work, but sleep sits upstream of most of it.

The target is seven to eight hours, protected the way you'd protect a customer call. A few things that move it:

• Keep one bedtime and hold it until it's automatic. A moving target is the hardest to hit.
• Stop eating a couple hours before bed and ease off caffeine after mid-afternoon.
• A warm shower before bed drops your core temperature afterward and helps you fall asleep.
• Kill the screens. Read, or don't, but get the bright light out of the last hour.
• Keep the bedroom for sleep. No laptop in bed, no work email as the last thing you see.
• Move during the day. Cardio, yoga, or a walk; anything that spends energy so the body wants to recover it.

The math is unsentimental. An hour of sleep you skip to work isn't an hour of work gained. It's a discount on every decision you make the next day, applied quietly, whether or not you feel it.