But what's the point of knowing how fast you're walking?

 Walking

the poor relation of physical activity

But what's the point of knowing how fast you're walking? "The aim is to increase your aerobic capacity, lower your resting heart rate and see when you start to sweat," explained FFA coach Ali Saddedine. "It's above this threshold that walking is effective for improving endurance. Below that, it's just window-dressing, even if it's better than nothing," continued the coach. "The idea is to determine each person's pace, so as to get each person to go a little faster."