Gender: Female. Usage: Gwyneth, of Celtic origin, is a popular first name. It is more often used as a girl (female) name. People having the name Gwyneth are in general originating from United Kingdom, United States of America. Meaning:
Importance of Calories: Calories And Health. The caloric balance of your diet is major factor determining your overall health. Your calories will be balanced, when, over time, the number of calories you take matches the number of calories you burn.
1 Age is a very important factor that determines the amount of calories a person needs. 2  Adults usually need more calories. 3  People who have an active lifestyle will need more calories, for example sportsmen will need more calories than an average person with a sedentary lifestyle.