How you can lose weight without losing mass?

While mass and weight are commonly confused, they are quite different. In layman's terms, mass (g) is a measurement of how much stuff a thing has in it, whereas weight (N) is a measurement of the earth's gravitational pull on a thing.

In space, there is little gravitational pull, so your weight would be minimal. However, your mass would be the same anywhere in the universe.

Now, if you want to lose fat off of your body, while maintaining a healthy lean muscle mass, eat within moderation, and do cardiovascular exercises at least three times a week for twenty minutes. Cardio makes your heart healthy, as well as requiring much energy to be burned from your body's fat supplies.