Protein is vital to the health and well-being of our body, without it we would not exist. It is well known that protein should be consumed regularly to maintain health, however many take protein supplements as it is believed to increase muscle development. Studies continue to demonstrate the positives and negatives of taking supplements in the form of nutritional powders, bars, and pellets. Proteins are present in every cell of our body, they are needed to repair and build new tissues around the entire body, and they are needed for chemicals. in our body as enzymes and hormones. Protein also slowly delivers energy to the body and is a good way to release energy steadily throughout the day. In addition to all this, proteins are most commonly known for their vitality in muscles, they are used to aid in muscle recovery and increase muscle size. Protein is a macronutrient that our body needs in large quantities to stay healthy. That said, those who exercise more than the average human will use more protein and therefore need more to maintain the same health as the average human. Our bodies are unable to store protein, so it is advisable to consume it throughout the day. in a first world country like ours you are said to need about 0.8 grams of protein per kilogram of body weight. Many protein supplements, especially whey protein supplements, state that at least double is required for those involved in "intense workouts" or who want to add muscle mass. These companies also suggest that 20 to 40 percent of your daily calorie intake should be protein. A common source of protein is eggs, eating one egg a day for breakfast is said to be good for the body. .... half of the article ...... it has not been fully clarified whether this leads to excess protein in the body which can cause side effects if the body fails to use it all. Short-term studies have shown that whey powder increases strength and muscle mass, however it is not known whether side effects on body composition may occur. In conclusion, it is clear that protein can be consumed healthily through natural sources, but for those who commit to more intense exercise, supplements are an effective way to get more whey protein (since it is suggested that double the average is needed). Science has demonstrated benefits in muscle growth and repair, however there is little evidence of long-term side effects. Manufacturers often use WPI with a blend of other whey proteins to emphasize its quality; Consumers often don't realize the percentages of WPI compared to other ingredients.