Strength training is a type of physical exercise specializing in the use of resistance to induce muscular contraction, which builds the strength, anaerobic endurance, and size of skeletal muscles.
Strength training is the most direct way to increase strength and muscle size. Strength training features maximal effort lifts designed to overload a muscle or muscle group followed by periods of recovery before repeating. Strength training targets type 2 (fast twitch) muscle fibers, which have the most capacity for increased size.