Every triathlete knows the stress and tension that comes with transitions. But also when getting on and off the bike. Lots of little things to watch out for, while a lot can go wrong. This is true not only for Age Group athletes, but also for professionals. This can be seen in the video below of Marc Dubrick, who had a nasty crash while dismounting at the Ironman 70.3 European Championships last weekend. He still finished tenth there, by the way.