Is this paragraph correctly written.?

Is this paragraph correctly written? Please help me.

One must regularly eat and burn the same amount of calories to maintain his weight. One increases his risk of gaining weight when he eats high-calorie foods, such as hamburgers, and drinks high-calorie drinks, such as soft drinks. One is less likely to be overweight or obese if he eats nutrient-dense, low-calorie foods, such as whole grains, fruits, vegetables, low-fat dairy products, and lean proteins.