A Romulan with blood on his face. Nanoprobes assimilating blood cells. Blood is the circulatory fluid that runs through most corporeal lifeforms in the universe. Its primary function is to carry nutrients and respiratory gases to cells and to remove waste products.
Muscle is more metabolically active than fat, and building muscle can help increase your metabolism (36, 37, 38, 39). This means you will burn more calories each day, even at rest (40). Lifting weights will also help you retain muscle and combat the drop in metabolism that can occur during weight loss (41, 42, 43, 44).
Metabolism increases when your body has a higher amount of lean muscle. To increase your lean muscle, exercise and diet are important. Try to eat a minimum of 0.8-1.2 grams of protein per kilogram of body weight. (One kilogram is equal to 2.2 lbs.) For example, a person who weighs 150 lbs weighs 68 kgs.