Here is a quick concept for you. It’s one of those things that you’ve probably thought about but never had a term for it. It is Opportunity Cost.
It is a basic concept of economics. It’s really simple. If you spend $5 on something, that money is spent and cannot be spent on something else. That’s [...]

Without sleep, we begin to lose the ability to:
1. Focus
2. Deal with stress
3. Stay mentally fit
4. Use tools
5. Heal; and
6. Stay well
Aren’t all of those things essential for survival? With sleep, on the other hand, we can do all of those things much more effectively.
via Guest Post: “Sleep as Part of a Preparedness Plan”.
He [...]