Hormonal

Acute moderate-intensity exercise performed in a fed state increases postprandial levels of satiety hormones (PYY, GLP-1, PP) and suppresses hunger during the exercise period, resulting in a net negative energy balance despite higher absolute food intake.

If you exercise moderately after eating, you will likely feel less hungry during the workout. Even if you eat a bit more at your next meal, the energy you burned means you are in a net deficit. Don't fear the post-workout meal; the hormonal response helps regulate it.