Interval run 3 x work 3 min in zone 4-5 recover 7 min in zone 3 There's nothing like doing intervals in the morning to start your day Apart from the runner's high, doing intervals also helps with sleep Last week I had the deepest and most refreshing sleep in a long long time on intervals day If it wasn't because of my boss waking me up I'd slept at my desk till it's time to go home #slowkidsofinstagram #running #nikefuel #nikeplus #nikerunning #runner #instarunners

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