Basic nutrient metabolism pt. 1 "macros" refer to the three macronutrients that comprise our diets: carbohydrates, proteins, and fats.
proteins end up becoming the major component of your body, constituting more of your weight than any other substance besides water. they are responsible for anything from building muscle following exercise training to helping rebuild your dna. when we eat proteins they are broken down and can either go to your muscles to build them, become stored as f*t when eaten in excess, or in rare cases burned as energy.
fats are a vital part of your diet and without them your body has a difficult time transporting necessary hormones to where they act. women have an "essential fat" of ~8-12% to make up their body just for survival. for men, that number is around 2-4%. these numbers are often only seen in special clinical cases, like lipodystrophy, but can under rare circumstances be attainable under other conditions like starving-- these numbers are wicked low! when we eat them, they are digested almost only after they pass your stomach and are broken down later. they can be stored in your muscles, your f*t stores, and used as energy for calorie burning.
the beloved carbohydrate too often gets a bad rep, however there is a major difference between how complex and simple carbs act in the body. they are the easiest fuel for your body to burn, and become the only fuel your body can really rely on during high intensity exercise. your body at all times has a necessary amount of sugar floating around in your blood at all times and your brain uses it constantly. thus, carbs are vital for regular brain function, and only in rare cases can it use other fuels like ketones (broken down from proteins). stay tuned for pt. 2...
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