Marcel Kittel is known to everyone for absolute dominance at the Tour de France, where he won 14 stages, 2 of them on the famous Champs-Élysées. A sprinter who has won almost 100 races, Marcel has had several ups and downs over the course of his career and the announcement of his retirement at just 31 surprised everyone. What made the powerful German, famous for his stature and engine, take the decision to retire when he was still in top form? Bernie Eisel is in Switzerland to find out and he met Marcel at his home on Lake Constance to talk about his extraordinary career, and to understand from his words the reason for his premature retirement at 31.