Physical exercise can 'train' the immune system. The finding comes from a study of older adults with a history of endurance training, which involves prolonged physical activity such as long-distance running, cycling, swimming, rowing, and walking.
A Week of Swimming in Cold Water Can Change You on a Cellular Level
Breaking the Rules: Free-Living Coral Stuns Scientists by “Swimming” Straight Toward Blue Glow
Swimming and spinning aquatic spiders use slick survival strategies
Swimming together lets fish move faster while expending less energy
