Baby fat in boys usually eases around the age of four, but the exact time of easing varies from person to person, and in some cases it may not ease until around the age of 15 to 16. Baby fat usually refers to a chubby, baby-like state, when the face has less muscle and more fat content. As an individual’s speech system develops and chewing function improves, baby fat will gradually ease or disappear. Generally, baby fat will gradually ease when boys are around four years old, but some may last until 15~16 years old. If you want to relieve baby fat, you can properly train your facial muscles so as to increase the strength and proportion of muscles and reduce fat accumulation. Meanwhile, doing some chewing activities properly can also train the facial muscles.