It's a Knock Out

Anyone know any good ways to knock yerself out? Cannie sleep at all and I have an exam in 5 hours. Do you think if someone knocked you out wae a punch right before you went tae bed, you'd get up a few minutes later like normal or would you sleep right through to the morning? Coz I'm almost at the point where I start punching my face, but I don't think I'm strong enough to knock myself out.