“The study, recently published online in Brain, Behavior and Immunity, found one 20-minute session of moderate exercise can stimulate the immune system, producing an anti-inflammatory cellular response.”
Read more here.
“Inflammation and exercise: Inhibition of monocytic intracellular TNF production by acute exercise via β2-adrenergic activation” by Stoyan Dimitrov, Elaine Hulteng, and Suzi Hong in Brain, Behavior, and Immunity. Published online December 21 2016 doi:10.1016/j.bbi.2016.12.017