Which energy system is used while standing waiting for the bus for 10 minutes?

The aerobic system is the primary energy system utilized during extended, low-intensity activities, such as standing and waiting for the bus for 10 minutes. This system relies on oxygen to metabolize carbohydrates and fats for energy production, making it efficient for maintaining activity over a longer duration.

When you’re standing still while waiting, your energy demands are relatively low, allowing the body to efficiently use the aerobic pathway to produce the required energy. The aerobic system supports a steady state of activity and is crucial for endurance-related tasks.

In contrast, the ATP-CP system is primarily used for short bursts of intense activity and doesn’t support extended periods of low-intensity activity. The heart, lungs, and circulatory system, while essential for delivering oxygen and supporting the aerobic system, do not represent an energy system on their own. The anaerobic lactic system, which generates energy without oxygen through the breakdown of carbohydrates, is also more suited for short-duration activities that demand a quick energy supply, such as sprinting or heavy lifting.

Thus, the aerobic system is indeed the most appropriate choice for the scenario described.