Explanation:
the answer is lean mass is the measurement of fat on the body
100% true. Unhealthy food has fat calories which cause weight gain. If the diet is a healthy one with no fat calories, you will not gain fat. Exercise is also key as it burns calories and reduces chances of various diseases that come with being overweight.
I think they say that because most younger teens havent been driving as long as older people. And some might text and drive, or not pay attenntion. But i disagree because i have seeen how older people drive and it scares me...