How I Know I'm Old

I used to get by on only 4 hours of sleep with no problem.

Yesterday I was on a caffeine high and didn't get to bed until about 1 a.m.

I wake up around 6 a.m. for work.

It is 10 p.m. and I feel like death warmed over because of lack of sleep.

10 years ago, this wouldn't have been an issue.

I feel so very old right now.