knackered

I'm totally knackered. (I'm learning British words!..)
After a full seven day working week, I was back at work on Monday morning. For a six day working week. I was really tired sitting on the tube Sunday afternoon at 4 pm. Sitting down and started to relax I yawned the whole way home. I had to struggle to keep myself awake to be able to fall asleep later for the night.

Waking up on Monday morning with the lack of weekend was definitely felt in the entire body. Same thing today. I'm just beat. Not at all as efficient as after a proper weekend off. (Hush, don't tell my manager...) At least I will have the upcoming Sunday off. Looking forward to that one.