Which information is given by a target heart rate? O how flexible one is O how strong one is O how long one should exercise O how hard one should be working

The first muscles to develop in babies are those in the a. neck. b. trunk. c. arms. d. legs.

Which of the following processes does the body not use protein to perform? a. repairing muscles b. producing hormones c. making hemoglobin d. creating amino acids

When exercising, you shouldn’t go past to avoid an injury.