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).
1 When you exercise for at least 30 minutes a day, you increase your metabolism rate for the following 24 hours. 2  All physical activity adds up to boost metabolism â walking farther when you go shopping, taking the stairs instead of an elevator, doing more work around the house or walking the dog â it all helps.