Fit grandad, 73, runs 200 miles with help of 4 exercises - 'didn't think it was possible!'

As people head to middle age, they will start to experience changes in muscle, hormones and metabolism, which all make it harder to keep trim and stay fit. But one slimmer has managed to keep himself going at the age of 74, still competing in triathlons and enjoying every second of it. -»

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