Metabolism (pronounced: meh-TAB-uh-liz-um) is the chemical reactions in the body's cells that change food into energy. Specific proteins in the body control the chemical reactions of metabolism. Thousands of metabolic reactions happen at the same time — all regulated by the body.
Because a number of factors can affect metabolism, there isn't a particular age when a teen's metabolism slows down -- it varies from one teenager to another.
Some teens are so busy that they gain an unhealthy amount of weight, in part because of poor diet and lack of exercise. For some teens, metabolism can be partly to blame for weight issues, but there are some healthy ways to improve metabolism. Teens must increase their activity.
No matter what your metabolism is like in your teens and 20s, you've probably been told that it's all just downhill once you hit “Wait until you.
In deciding on the topic for my first blog post a few years ago, I opted to write about my two sons--who are now 25 and At the moment, both.