Why do anesthesiologists ask us to count back from 10 before going under?

Question

I understand they want to know when we pass out, but why count backwards from 10? Why not count forward from 1?

In: 2183

Answer 1

I’ve only been under 1 time and I asked “should I count back from 100?” They looked at me and said “nah you’ll be out in a few seconds anyway”….”uhh wai…zzzzzz”

“Sir sir wake up its time to go”