sex hormones metabolic hormones growth hormones body temperature blood flow hydration status body position physical activity shown increase levels natural killer nk cells nk cells macrophages neutrophils eosinophils complements cytokines antibodies cytotoxic cells however mechanism linking physical activity immune system fully understood weight control achieving resilience physical fitness promotes vast complex range health related benefits individuals keep physical fitness levels generally regulate distribution body fat prevent obesity abdominal fat specifically visceral fat
Applied science Human physical performance and recreation Physical fitness