It may seem obvious to some people that walking is a healthy activity as it involves breathing in fresh air and burning off fat, but one expert has also said it can reduce the risk of catching a cold.
Professor Mike Gleeson from Loughborough University has published research material stating that it is moderate exercise that is most effective in helping to battle the virus during winter time.
He said doing heavy training - such as for a marathon - is an approach that leads to increased susceptibility.
While people who tend to spend their free time sat in front of the TV have an average risk of catching a bug, Professor Gleeson said: "Research shows that those undertaking regular moderate exercise (e.g. a daily brisk walk), can reduce their chance of catching a respiratory infection, such as a cold, by up to almost a third."
By comparison, heavy exercise can increase the risk, with the aftermath of a marathon bringing between two and six times the risk of catching colds or flu.
This week, the Ramblers said people should make walking more often their new year resolution for 2012.