strength training involves using resistance against your body's force to build muscle mass and strength
anaerobic exercises are activities that require short bursts of energy without oxygen such as sprinting or weightlifting
Muscle mass
Physical size of the muscle; amount of muscle tissue in the body
Strength training
Using resistance against the body's force to build muscle mass and strength
Muscle flexibility
Range of motion of a muscle; ability of a muscle to lengthen and stretch
Muscle flexibility
The range of motion of a muscle and its ability to lengthen and stretch
Range of motion
The extent or distance that a joint can move in a particular direction
Lengthen
When a muscle lengthens, it is being stretched. This happens when the muscle is at its longest point in a movement
Sit-and-reach test
A common test used to assess muscle flexibility, which involves sitting on the floor with your legs straight out in front of you and then reaching forward as far as you can towards your toes
