Hot Foods Or Drinks Makes Me Tired, Hot Temperature Increase Serotonin?

[Hgreen56]

i always noticed that hot foods or drinks makes me very sleepy for a hour or so after intake.
Even if it is a small easy digest meal or one cup of water, it doesn't matter.
Can high temperature increase serotonin in the body?

 

[Rinse & rePeat]

i always noticed that hot foods or drinks makes me very sleepy for a hour or so after intake.
Even if it is a small easy digest meal or one cup of water, it doesn't matter.
Can high temperature increase serotonin in the body?

That is a really question! I don't care for hot things in the summer, but I can be good with some warm meals in the winter. I wonder if both of our feeling about hot things correlate?