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Running Form and Physiology

How your body works whilst you run is fascinating. These articles, videos and free tools help you understand how your body performs.

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On your watch

Related Watch Metrics

Bands of effort, from very easy through to flat out, based on percentages of your maxim...

An estimate of how much oxygen your body can use at full effort - a rough proxy for you...

An all-day energy score, roughly zero to one hundred, that charges while you rest and s...

An estimate of the energy you have burned — active calories from exercise, total calori...

An estimate of your mechanical effort in watts, a concept borrowed from cycling.

How many steps you take per minute while running. Normally measured in Steps Per Minute...

How far you travel with each individual step.

How evenly your ground contact time is split between your left and right legs.

How long each foot stays on the ground with each step, measured in milliseconds. Usuall...

How much you bounce up and down with each stride, measured in centimetres.

Your bounce as a percentage of your stride length — a tidiness score for your running f...