This answer may be too late for you, but sleep experts typically recommend 10 to 12 hours. Unlike the body’s thirst response where we can feel thirsty and not know until it’s too late that we’ve been dehydrating, feelings of tiredness usually give a person enough warning that they need to get some shut-eye.
Meet a man who slept for two years
If you’re going hard at work or even exercising both day and night, you might think 8 hours is plenty–but only if those 8 hours were back-to-back throughout the whole day. In reality, as soon as your adrenaline starts wearing out from exercise or as soon as your willpower from focusing increases, those levels drop dramatically. It’s been proven.