Ethiopia - Slim might be trending elsewhere in the world, but for Ethiopia's Bodi (or Me'en) people, bigger is always better. The tribe, which lives in a remote corner of Ethiopia's Omo Valley, is home to an unusual ritual which sees young men gorge on cow's blood and milk in a bid to be crowned the fattest man.
Six months after starting the regime, the men emerge to show off their newly engorged physiques, and for a winner to be chosen. The champion fat man is then feted as a hero for the rest of his life.
The Ka'el, or the New Year, ritual and the Bodi's traditional way of life is under threat from the Ethiopian government who plan to resettle 300,000 people from all over the country on their lands. For now, the tribe continue as they always have, and still celebrate Ka'el in traditional style each June.
The contest begins six months before the ceremony. Every family is allowed to present an unmarried man for the challenge, who, after being chosen, retires to his hut and must not move or have sex for the duration.
Food comes in the form of a cow's blood and milk mixture, served regularly to the men by women from the village.
The cows are sacred to the Bodi tribe, so they are not killed. The blood is taken by making a hole in a vein with a spear or an axe, and after that, they close it with clay.
Because of the scorching temperatures, the men have to drink the two-litre bowl of blood and milk quickly before it coagulates. But not everyone can handle drinking so much at speed. The fat men drink milk and blood all day long. The first bowl of blood is drunk at sunrise. The place is invaded by flies. The man must drink it quickly before it coagulates, but some cannot drink everything and vomit it.
On the day itself, the men cover their bodies with clay and ashes before emerging from their huts for the walk to the spot where the ceremony will take place.
Thanks to the weight gain, many of them find covering the short distance tougher than the weeks spent fattening up.
The ceremony itself involves spending hours walking in a circle around a sacred tree, watched by the other men and helped by the women who ply them with alcohol and wipe away the sweat.
Once the fattest man has been chosen, the ceremony ends with the slaughter of a cow using a huge sacred stone. Village elders will then inspect the stomach and the blood to see whether the future will be a bright one or not.
After the ceremony, the men's lives return to normal, and most lose their enormous bellies after a few weeks of eating sparingly. But a few weeks later, the next generation of competitively fat Bodi men will be chosen and the cycle will begin again.