Why should you not sleep after a snake bite?

Why should you not sleep after a snake bite? By morning the neurotoxin spreads in the body and the victim dies of respiratory failure. We always advise people to sleep on a cot, or while camping outdoors use mosquito nets to keep the reptiles away.

By morning the neurotoxin spreads in the body and the victim dies of respiratory failure. We always advise people to sleep on a cot, or while camping outdoors use mosquito nets to keep the reptiles away.