Explanation: A healthy person should consume 0.8-1 g/kg of protein per day to maintain an ideal and physical well-being.

Explanation: Fiber is not considered a nutrient. Roughage is not broken down into smaller pieces after digestion. Fiber is a part of roughage that is used and should often be present in our daily diet. However, it is not digested and utilized by the body, it is a very essential part of the diet.

Explanation: Milk, cheese, and yogurt provide calcium in a readily absorbable and convenient form. They also have various health benefits and are a good source of many nutrients, including calcium, protein, iodine, vitamin A, vitamin D, riboflavin, vitamin B12, and zinc.

Explanation: The benefits of Whey protein include increasing muscle mass, preventing muscle loss, improved performance, and increased satiety, which is useful for weight loss. Adequate protein intake can also preserve muscle mass while aging.

Explanation: Experts suggest that it's best to drink milk at night when your body needs to wind down and switch from being active to more relaxed.