9781422286975

Words to Understand circulatory: Having to do with your heart and blood vessels. respiratory: Having to do with your lungs. efficiently: Done well, with little or no wasted energy. sustained: Kept going for a long time. resistance training: Exercising with weights or strong rubber bands to increase how much power your muscles have. ligaments: Strong, stretchy bands that hold bones together. tendons: Stretchy bands that connect muscles to bones. nutrients: Chemicals in food your body needs to function correctly. processed: Food that has had certain parts taken out and others added, usually through canning, freezing, or packaging. legumes: A food group that includes beans, peas, and other seeds or pods. metabolic: Having to do with the chemical processes of your body.