I've been unusually tired today. So tired I actually noticed that I felt tired.
I just realised that I haven't actually eaten any food today.
None. I haven't eaten for 22 hours.
That's probably why I'm tired.
I literally don't have any energy.
Now that I'm conscious of it, I think I'll go and ingest some energy.
Oddly enough, I don't feel hungry. Nor can I recall feeling hungry during the day.