How many of you have felt like you want to throw up
both hands and just quit.
You have nothing left in the tank.
I know I have.
In cars the gas tank sensor will detect how much fuel is left.
When you're driving with the indicator on empty,
"I'm running on empty".
this also applied to people.
If you are exhausted and feel like you can't go on much longer,
you can say "I'm running on