6. a terrorist hijacks a plane that contains lots of money and 10 passengers. after taking the money, he
asked the government officials for 11 parachutes.
he then killed all the passengers so that none could identify him, took one parachute and jumped off.
why did he ask for 11 parachutes if he only needed one?

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.