This one in mice suggests that acute exercise, especially modalities such as HIIT and resistance exercise, may induce hypothalamic leptin action and changes in appetite-related neuropeptides, possibly through central lactate metabolism, which can eventually lead to decreased food intake.
There are some findings in humans as well that support the notion that exercise-induced spikes in lactate can induce appetite suppression:
https://doi.org/10.1152/japplphysiol.00081.2020
https://doi.org/10.1152/japplphysiol.00218.2017
https://doi.org/10.1016/j.appet.2019.104443
https://doi.org/10.1139/apnm-2019-0086