In 2004, having completed his studies and encouraged by his wife Pilar who was starting out in triathlons, he returned to compete with clear and ambitious objectives. He achieved good results, but endurance events were still a stumbling bloc, caused by digestive problems in the final stages of competitions when the body needs to react. In 2007, aware that this is one of the biggest problems that athletes have to overcome in distance events he decided, along with his doctor, coach, dietician, reading many specialised books on the topic, scientific studies and testing all the products in the market, to investigate the causes of digestive problems in competition and how to overcome them.