answer to question 1 : its better to start now than later because its "easier" for teenagers to lose weight due to the amount of energy they have unlike adults whos energy decreases as they get older
answer to question 2 : people could start a healthy diet and a habit of doing exercise. this can help you reduce the risk of having health problems as you get older
Weight must not be confused with the mass of an object which is a fundamental property of the object expressed in kilogram (kg). Therefore, the mass of an object on the Moon remains the same as its mass on Earth. But its weight gets less because the gravity on the moon is less than on the Earth.
