The human body has over 600 skeletal muscles.

Types of Muscles

Muscles are categorized into three types:

• Skeletal muscles attach to bones and are responsible for voluntary movement, such as walking or lifting weights.
• Smooth muscles are found in the walls of internal organs, like the stomach and intestines, and are responsible for involuntary movement, such as digestion.
• Cardiac muscles are found in the heart and are responsible for involuntary contraction to pump blood through the body.

Muscles are fueled by the macronutrient, protein. When you consume protein, it is broken down into amino acids, which are used to repair and build muscle tissue. In addition to protein, carbohydrates and fats are also important for energy and overall health. Adequate nutrition is essential for muscle growth and recovery.

Muscle Growth

Muscle growth occurs when the muscle fibers are damaged through exercise, and then repaired and strengthened during recovery. This process is called hypertrophy. Resistance training is an effective way to stimulate muscle hypertrophy. Resistance training involves using weights or other resistance to work the muscle fibers. As the muscle fibers are challenged, they adapt and become stronger, resulting in muscle growth.

In summary, muscles are responsible for movement, categorized into three types, fueled by protein, and grow through the process of hypertrophy stimulated by resistance training.

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