kawauchi's appetite catches everyone's attention. he said he once tried to go on a diet, but it didn't improve his running. so now he eats what he wants to eat, to the last drop. >> translator: i can create my own training menu and train the way i like. that's an advantage of being an amateur runner. i don't have resources like corporate athletes, but i think it's possible to make up for that, if you're committed enough to your goal. it's better to pursue a running career with your own determination and passion, not for somebody else. >> reporter: kawauchi tries to push himself to the limit in each race. that's his strength. but also a risk, as he often ends up in the medical tent. during the oki marathon in western japan last summer, kawauchi went too far. he was dehydrated and collapsed just 400 meters before the finish line. his breathing grew weak and an ambulance was called. he was released from the hospital hours later. >> translator: i'm sorry to create so much trouble, but i'm actually to push myself really hard. i like to us