Interval training’s stock has soared in recent years. Is it any wonder, when it promises to deliver impressive health and fitness perks in a shorter time frame than other workouts? Sessions can be fun ...

If you decide to start following a structured training plan to improve your running or aim for a target race, you’ll probably soon come across the term ‘interval training’ . But if running is still ...

When data has been grouped, the mean value cannot be found exactly as the individual values in each class are not known. To find an approximate value for the mean from a grouped frequency table, the ...