Know which nutrients are primarily used for different levels of activity (e.g., rest, moderate-intensity, high-intensity).
Rest = mostly fats Moderate intensity = split between fats and carbs High intensity = only carbs
The human body requires different nutrients and energy sources based on the level of physical activity. Here are the primary nutrients required for different activities:
1. Rest: When the body is at rest, it still requires energy to maintain normal bodily functions such as breathing, digestion, and circulation. Nutrients needed at this level of activity include carbohydrates, fats, and proteins. Carbohydrates provide energy for the body while fats and proteins help in building and repair of body tissues.
2. Moderate-Intensity: This includes activities such as walking, jogging, and cycling at a moderate pace. The body primarily uses carbohydrates as a source of energy during moderate-intensity activities. Specifically, glucose is the fuel that muscles use for energy during such exercise.
3. High-Intensity: This includes activities such as sprinting, weightlifting, and high-intensity interval training. At this level, the body requires a combination of carbohydrates and fats for energy. Carbohydrates are rapidly turned into glucose and provide an immediate source of energy while fats are used as a more sustained source of fuel.
In summary, the two main sources of energy for physical activity are carbohydrates and fats, and the level of activity determines the proportion needed for optimal performance. A balanced diet with a variety of nutrient-rich foods can help individuals meet their dietary needs for various activities.
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