Muscular endurance is one of the essential components of fitness which helps you to increase your stamina to perform tasks easily. It sounds difficult in term but its meaning is quite simple. It refers to the ability of muscles to exert force against any resistance, consistently and repetitively, for a longer period of time.
One example of muscular endurance is marathon race. In which, athletes perform same movements repetitively. This requires athletes to have great level of muscular endurance otherwise they may injure themselves.
It doesn’t mean you would have to run for hours to improve your muscular endurance. You can perform different basic exercises to increase your muscular endurance. With improved muscular endurance you feel energetic even doing hundred of tasks.