Masai Tribe

The Masai tribal people are found in the plains of Kenya and they like to mix the blood of the cows that they suck from their cows' neck with the cow's milk. So it's a mixture of milk and blood.
Then they drink it like we drink tea or coffee or water
It helps to keep them healthy and strong runners
Those Kenyans world class middle and long distance runners
cheers
Roger Chin