As a real fitness enthusiast, Will Tennyson can regularly be found working with heavy weights in the gym. He knows what it’s like to keep track of what he eats, but the life of a long distance triathlete is extreme, even for him. To get to the start line of a long-distance triathlon fully prepared, triathletes spend quite many hours training every week. To get the most out of all these workouts, triathletes also need to eat enough to stay healthy. For one day Youtuber Will Tennyson tried out what the life of an endurance athlete is like.