Hunger ?

[anne_77]

Decreased appetite after exercise can be due to higher body temperature or over-exertion. When your body gets back to normal, you should get hungry again.

Given that you said this was a particularly intense ride, and you were tired enough to want to sleep, I'm guessing you just over-exerted yourself.

If you plan on doing a strenuous ride, just make sure you eat and drink properly before, during, and after to prevent bonking. Keeping yourself fuelled-up may in itself improve your appetite.