Muscular Strength and Endurance
Muscular strength is the ability of your muscles to generate force in a short period of time...the burst of energy you need to lift a heavy weight. When you increase your strength, you often increase the size of your muscles as well as the strength of your connective tissues (joints and tendons).
Muscular endurance is the ability to use your muscles repeatedly and continuously over a period of time, without undue fatigue or tiredness.
This video offers a comprehensive push-up improvement program that will help you gain lean muscle mass and help you achieve a better push-up score during "Fitness Testing".
The abdominal curl-up can be effectively performed in many ways. This video shows one way to practice for improvement in the area of abdominal muscle "Fitness Testing".