Sports nutrition has become so scientifically focused that the ingredients in products such as gels read more like a chemistry textbook than an edible food item.
There isn't much more gruelling sweat test as Lakes in a Day - a huge Ultra run that took place on 10th October. 50 miles, 4000m ascent - a journey on foot from the very top of the Lake District at Caldbeck to the very bottom, at Cartmel, via the stunning Helvellyn Ridge and the western shoreline of Lake Windermere.
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Raising your heart rate during your working day is a much more productive break than putting the kettle on - but the two activities don't have to be mutually exclusive!
Core strength is often neglected when you're busy putting the miles in on the road or round a park, but for many runners, if they focused on core workouts twice a week, they'd notice an improvement in their running.
Find out how much water you should be drinking and when you should eat carbohydrates and protein to improve performance and recovery...