Carbohydrates, proteins, and fats are macronutrients, while vitamins are micronutrients.

Carbohydrates are the body's primary source of energy.

Candy is a high-sugar food that provides little nutritional value.

The recommended daily intake of carbohydrates for athletes is 6-10 grams per kilogram of body weight.

Proteins are essential for building and repairing tissues.

Processed meats are high in saturated fat and sodium, and they are not a good source of protein for athletes.

The recommended daily intake of protein for athletes is 1.2-1.7 grams per kilogram of body weight.

Fats are the body's secondary source of energy.

Butter is high in saturated fat, and it is not a good source of fats for athletes.

The recommended daily intake of fats for athletes is 20-25% of total calories.

Hydration is important for athletes because it helps regulate body temperature, transport nutrients and oxygen to cells, and remove waste products from the body.

The signs and symptoms of dehydration include headache, fatigue, muscle cramps, and decreased urine output.

Athletes should drink 10-12 cups of water per day.

Athletes can stay hydrated during exercise by drinking water before, during, and after exercise, drinking sports drinks during exercise, and eating fruits and vegetables that are high in water content.

Common mistakes that athletes make when it comes to nutrition and hydration include not eating enough carbohydrates, not drinking enough water, eating too much protein, and not eating a balanced diet.