Glycogen is a critical energy store in the human body, primarily stored in the liver and muscles, and is essential for maintaining energy levels during physical exercise and other metabolic processes. http://Hu.Feng.KU.Angn.I.Ub.I.Xn%26Mdash,.Xn%26Mdash,[email protected]/ox/shogo/ONEE/g_book/g_book.cgi