system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Is it me or whenever I'm done working out I randomly get full and don't feel like eating ?
gpt
This is a common thing.

There is a hormone believed to be responsible for your body creating that hunger feeling or having an appetite.

And studies have shown that it seems physical exercise suppresses the release of that hormone.

One theory for why this happens is it a beneficial reaction developed through evolution. For most of human history the only time you’d really have super intense physical exercise is likely in life and death scenarios, like say, fighting off, or running away from, a predator. The theory is that in these kinds of scenarios, it is beneficial to not be distracted by hunger pains.