How to Gain Weight in One Night

Gaining weight quickly is a necessity for some people who need to bulk up for a boxing match or simply want to get bigger in a hurry. There are several ways of gaining weight quickly, including exercise, increasing calorie intake and drinking lots of water. Gaining too much weight too quickly increases risk of elevated cholesterol levels and many other weight-related diseases including heart disease, high blood pressure and increased risk of certain types of cancer. Weight gained overnight is only temporary, however, and long-term weight gain requires a steady diet of increased caloric intake.

Eat foods high in fat and sugar throughout the day, with some carbohydrates and protein mixed in. Avoid eating foods with minimal caloric value such as leafy greens or vegetables. Eat one meal every two to three hours. Aim to consume at least twice as many calories as you would consume in a normal day.

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Drink at least a gallon of water throughout the day. Try to avoid the sauna and other extremely dehydrating environments. Avoid coffee, alcohol and other diuretics.

Lift weights at the gym. Complete three reps of heavy weight for either the upper or lower body, but not both 3. Drink plenty of water between repetitions and after the workout. Do not complete any cardiovascular exercises.

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Sit or recline throughout the day to increase water retention and caloric build-up. Remain in a cool, humid environment to avoid dehydration and maximize water retention.

Tips

Eating foods rich in sodium can help with water retention, which is a component of temporary weight gain.
Eating prior to bedtime will help minimize digestion and will add additional temporary weight.

Warnings

Never binge consistently, as this can lead to an unhealthy gain in weight. Consult a physician before starting any diet or exercise program. Avoid too much sodium intake, as this can lead to serious health problems.