It would take too long, I believe, and you'd likely be discovered before death. Not really a practical way. Babies are more fragile. That's why they "cook" in the heat in short order. Adults are more hearty, if you will. Another thing is it's a difficult way to go. I bet the sleeping pills would wear off before you died. You'd be dehydrated and sickly, but not dead. Just really sick and miserable. Is that really the only choice available to you? Surely, that has to be a better, more peaceful way. I don't consider dying my heat prostration a peaceful death.