Health expert Dr Michael Mosley has recommended an easy exercise for people looking to burn calories and increase their overall health.
The well-known TV doctor says that, as well as burning fat, the exercise can also help improve your posture, reduce back pain and even boost your mental health.
He is talking about Nordic walking - a pastime which became popular in the 1990s when skiers started using it for summer training.
It involves using poles and employing a special technique to make sure you are doing it correctly. Once the technique is mastered, experts say, the health benefits are astonishing.