https://www.healthcentral.com/article/month-old-son-vomiting-running-no-reason-all-no-weight-loss
GERD

21 Month Old Son Vomiting After Running, Or For No Reason At All?, No Weight Loss.

    Answered by Jan Gambino
    You should know: The answer above provides general health information that is not intended to replace medical advice or treatment recommendations from a qualified healthcare professional.