Research shows that people who take regular, moderate walks during the winter are 30–50% less likely to get sick than those who remain sedentary.
Although cold weather is often blamed for seasonal illness, temperature itself is not the main factor behind weakened immunity.
Instead, reduced physical activity during winter months slows immune responses and circulation.
Consistent walking helps immune cells move more efficiently through the body, improving their ability to detect and fight infections.
This relationship between moderate exercise and stronger immunity has been highlighted by Harvard Medical School.
