Malnourished = someone who does not eat a balanced diet - Can be underweight or overweight
Metabolic Rate = Rate at which chemical reactions are carried out in the body.
Muscle cells use more energy than other cells, so would result in a higher metabolic rate.
Lifestyle and disease
Eating less means you take in LESS ENERGY
Exercising more increases the AMOUNT OF ENERGY you spend
IF you can SPEND MORE ENERGY than you take in. You will LOSE MASS.