All nighter

I had a rare all-nighter last night, only a couple of hours of sleep, as I scrambled to finish work and send it off. I am not used to such nights these days, I found it much easier in Malaysia when they happened every so often. Well, I finished and the work is gone and I slept for a couple of hours and woke feeling annoyed at myself for feeling a little woozy. I never used to, I hope it is not age.