Moderate consumption: protein powder and creatine are both nutritional supplements, but excessive use may cause a burden on the body. It is recommended to take it reasonably according to your own needs and fitness plan, and do not exceed the recommended amount.
Understand the side effects: Some people may have allergies, diarrhea and other symptoms when using protein powder and creatine, so it is best to consult a doctor or professional before starting to use it.
Pay attention to the balance of diet: the diet during fitness should be balanced and diverse, and you can't just rely on nutritional supplements to provide all the nutrients your body needs. Appropriately increase the intake of protein, carbohydrate, fat, vitamins and minerals in the diet.
In a word, people aged 16 can eat protein powder and creatine properly, but they should pay attention to the proper amount, understand the side effects and keep a balanced diet. If in doubt, please consult professional opinions and suggestions in time.