carbs vs. protein
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Depends what kind of activity. Endurance activities require more carbohydrates and strength and power activities require extra protein. Also if you have a fast metabolism your body might need extra unsaturated fats to serve as fuel to protect your lean body mass from getting used up for energy. It can be complicated to find a balance and it is better to have a Registered Dietician to give you a complete solution and adjustments as needed.