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Sleep more, stress less
"…people who are highly stressed get more colds, suffer more digestive tract problems and are more frequent bouts of fatigue."
Sleep rejuvenates and revitalises your body, and helps your immune system function at its best. Deep sleep stimulates the thymus gland to produce T-cells, which are a type of white blood cell that helps reject foreign substances, and controls the production of antibodies to fight infection. Sleep also helps your body deal with stress, which has a strong influence on your immune system. Stress triggers the release of adrenaline and cortisol—hormones that reduce your body's ability to produce antibodies. That's why people who are highly stressed get more colds, suffer more digestive tract problems and are more frequent bouts of fatigue. Aim to get at least seven to eight hours of sleep every night, and practice relaxation techniques to help prevent stress.