Im just wondering maybe someone can help me understand.

My question is about feeding ?

I understand the whole part that BP's need heat to digest there food .
I understand you should not handle them for about 2 days so they can digest.

But my question is why are they so aggressive after they have eaten and what makes them not aggressive after lets say this 2 day waiting period before you can handle them ? Is it something like the food does to them ?Is it like some chemical balance issue lol what is it im curious to know ?

I just got my snake yesterday and I fed him a F/T rat today and he took it no problem.... reason im curious and asking this question is I went to change his water after he ate and boy he didn't look happy sitting in the corner in the striking position.

Anyways just wondering what it is if anyone knows
thanks