How Muscles Respond to Exercise

Muscles respond to exercise in a number of ways, both during and after workouts. Exercise improves your muscle strength, speed, power and endurance. Muscles changes start with resistance exercise. When this resistance is greater than what your body typically encounters during the day, the process of muscle hypertrophy, or muscle building,, is activated. Intense exercise causes trauma to muscle fibers resulting in small microscopic tears in the tissue. The size and severity of tear depends on exercise intensity. Tears in the muscle tissue activated special satellite cells that rush to the damaged area. 

These cells replicate, mature into grown cells and fuse to your muscle fibers. This process forms new muscle protein strands which increases the strength and size of the muscle resulting in overall muscle growth. Exercising specific muscles regularly can increase their size by up to 60%. Not at all forms of sports can increase muscle size. Some sports rely more on coordination and control than on physical power and strength. Frequent exercise leads to improved muscle coordination. It trains muscles to work more efficiently and efficiently and effectively by working together. 

As a result of long term exercise blood supply to the muscles increases. This improves the delivery of various nutrients, minerals and vitamins to the muscles which makes them more effective and faster at regenerating after injury or workout. After regular exercise, muscles can store large amount of glycogen for energy. Size and quantity of mitochondria (powerhouse of cells) also increase in muscle cells which results in an increased rate of energy production. Active muscles are excellent for dealing with food energy, both fat and sugar. 

Enzymes involved in energy production become more efficient and speedup metabolism. If you are sedentary, the muscle becomes less able to absorb glucose. It is also able to help burn off fats, which can accumulate in the arteries. Leading to an increased risk of stroke and heart disease. Our muscles have evolved to perform in this way which suggests that humans were meant to be active and on their feet.