As most of us would likely guess, walking is the most popular physical activity in America. But people who walk for exercise do so at wildly varying speeds and intensities. Some stroll at a leisurely 2 miles per hour, which is low-intensity exercise. Others zip along at twice that pace or better, resulting in a sweatier workout.
Mummification is a process in which the skin and flesh of a corpse can be preserved. The process can occur either naturally, or it can be intentional. If it occurs naturally, it is the result of cold (as can be found in a glacier), acid (as can be found in a bog) or dryness.
The brain was the organ that was removed first, using a long hook through the nose. The Egyptians didn't think the brain was important, so it was destroyed during the mummification process. Next they took out the internal organs, lungs, stomach, liver, and intestines by making deep cuts in the abdomen.