aerobic exercise

Sustained rhythmic activity — walking, jogging, cycling, swimming — that lifts breathing and heart rate while the body meets its energy demand mainly through oxygen-dependent metabolism. Because it burns a mix of carbohydrate and fat over extended periods, it improves cardiovascular fitness, insulin sensitivity, blood pressure, and mood, and it is the cornerstone of public health recommendations for physical activity. Nutrition and aerobic exercise are deeply linked: carbohydrate availability determines how long moderate intensity can be maintained, hydration governs performance and safety, and post-exercise meals replenish glycogen and repair muscle. Even modest doses, such as brisk thirty-minute walks most days, produce measurable benefits. For weight management it works best paired with dietary change, since exercise alone burns fewer calories than most people expect.