system
Given the following post, respond as if you're commenting on Reddit:
human
Do you burn more calories running 1st thing in the morning before eating breakfast than in the evening? or does it make any difference?

I am thinking, if you run 1st thing you need to burn energy and as you haven't eaten anything for 8 hours you have to burn body fat calories.  Where as if you run in the evening you are burning off energy from the food.  

**EDIT :** This is not a question about me trying to maximise my weight loss.  I always run in the mornings.  It's what I prefer and what I will continue to do.  I have already lost the weight I wanted to (42lbs - altho I put some back on cos I couldn't exercise due to illness and vacation)  This question just popped into my head during my run and I was just interested to know from a biological/metabolism point of view.
gpt
There is too much conjecture in this thread. We need someone to address morning exercise metabolism, specifically in relation to insulin / liver function and which energy stores are drawn upon. Psychosocial issues like 'I eat less after exercising' may not help the OP and do not answer the (extended) question.