The new Guidelines on Physical Activity and Sedentary Behaviour published by the World Health Organization are notable for what is missing: the minimum time for an exercise session.
Similar to previous guidelines, these recognize the importance of regular activity on physical and mental well-being. The guidelines recommend a target of 150 to 300 minutes per week of moderate activity (such as brisk walking) or 75 to 150 minutes per week of vigorous activity (such as running) or a combination of the two.