Whether you need to use supplements during fitness depends on your physical condition, training objectives and eating habits. If you can get enough protein, carbohydrates, fat and other nutrients through a healthy diet, then you may not need to use supplements.

However, if your diet does not provide enough nutrition, it may be beneficial to use supplements. For example, if your diet is low in protein, you may need to use protein powder to increase your intake of protein. Similarly, if you lack certain nutrients in your diet, using supplements can help you get the nutrients you need faster.

However, when using supplements, we should pay attention to choosing high-quality and reliable brands and use them according to the instructions to avoid excessive use. Before using supplements, it is best to consult a professional dietitian or doctor to ensure that your supplements are used safely and correctly.