Anaerobic metabolism, specifically the breakdown of glucose without the use of oxygen, is the primary energy source for short-duration, high-intensity exercise.

Type I muscle fibers, also known as slow-twitch fibers, are best suited for endurance activities due to their ability to generate ATP aerobically and their resistance to fatigue.

Stroke volume, the amount of blood ejected from the heart per beat, increases during exercise to meet the increased demand for oxygen and nutrients.

Regular aerobic exercise helps to lower blood pressure by improving the elasticity of blood vessels and reducing peripheral resistance.

Glycogenolysis is the process by which glycogen, a stored form of glucose in muscle and liver cells, is broken down into glucose for energy production.

Maximal oxygen consumption (VO2 max) is limited by a combination of factors, including cardiac output, stroke volume, and arteriovenous oxygen difference.

Lipolysis is the process by which triglycerides, stored in adipose tissue, are broken down into glycerol and fatty acids for energy production.

Resistance training offers a range of benefits, including increased muscle mass, improved strength, and enhanced balance.

Proteolysis is the process by which proteins are broken down into amino acids for energy production.

Regular physical activity offers a range of benefits, including reduced risk of chronic diseases, improved mental health, and enhanced sleep quality.

Glycolysis is the process by which glucose is broken down into pyruvate for energy production.

Isometric contraction is a type of muscle contraction in which the muscle length remains the same, resulting in no movement.

The pyruvate dehydrogenase complex is a series of enzymes that convert pyruvate into acetyl-CoA, which is then used in the citric acid cycle for energy production.

Eccentric contraction is a type of muscle contraction in which the muscle lengthens, such as when lowering a weight during a bicep curl.

The citric acid cycle, also known as the Krebs cycle, is a series of chemical reactions that convert acetyl-CoA into ATP, the body's primary energy currency.