To gain weight, what is the recommended action?

To gain weight, the recommended action is to eat more food. This involves consuming a higher number of calories than the body expends through daily activities and metabolism. By increasing food intake, especially with calorie-dense foods that are rich in nutrients, individuals can create a positive energy balance, which is essential for weight gain.

Focusing on a variety of food groups, including proteins, carbohydrates, and healthy fats, can help ensure that the individual gains weight in a healthy manner. It's also important that the calories consumed come from nutritious sources to support overall health and not just empty calories, which could lead to other health issues.

While increasing physical activity could potentially promote muscle gain, it may not directly lead to weight gain unless accompanied by increased calorie intake. Similarly, eating less food would lead to weight loss rather than gain. Drinking more fluids can aid hydration and general health but does not contribute to weight gain in the same way that increasing food consumption does.