How does regular exercise make us more alert and energetic? 1 it gets our hearts beating faster and gives us a rush of energy. 2 we breathe in more oxygen while exercising, which us feel more awake. 3 exercise increases our endurance and therefore we feel less tired. 4 during exercise, the brain releases endorphins, the chemicals that improve our mood.

Which of the following statements is true about body composition? a. body composition is the percentage of fat to lean body mass. b. body composition is a measure of one's body weight. c. body composition is a measure of one's essential body fat. d. body composition is not a good indicator of overall health. select the best answer from the choices provided. a