对于戴维来说，跑步是理所当然的。在肯尼亚裂谷，最伟大的马拉松赛跑者的故乡，孩子们在这项运动中看到了摆脱贫困的方式。戴维每天穿越森林到达埃尔达马峡谷，在离内罗毕大约300公里的温室里从事种植者工作。戴维的跑步秘诀是富含乌干利（玉米粉，肯尼亚主食），茶和他的珍贵的，即使是坏的跑鞋。

For David running is something natural. in the kenian Rift Valley, homeland of the greatest marathon runners, kids see in this sport a way to emancipate themselves from poverty. David crosses the forest every day to reach Eldama Ravine, in the greenhouse where he works as a grower, about 300km far from Nairobi. David's running secrets are a diet rich in ugali (cornmeal mush, kenian staple foodstuff), tea and his precious, even if wornout, running shoes.