A man can pull out as a way to prevent pregnancy when no other birth control method is available. Pulling out allows for sexual spontaneity. Withdrawal doesn't cost anything. If you have great self-control, experience, and there is trust between partners, pulling out can be used more reliably.
Determining Basic Caloric Need. To estimate how many calories you should consume daily to support basic metabolic functions such as sleeping and breathing, first determine your weight in kilograms -- divide your weight in pounds by 2.2. Next, multiply your weight in kilograms by your basal metabolic rate -- 0.9 if youâre a woman.
Most of us are aware that different food products contain different amounts of calories. A product high in calories will give your body more energy. Your body needs approximately 2,000 calories per day if you are female and 2,500 if you are male. If your calorie intake exceeds this requirement and you do not use up the calories, no matter what food source the calories have come from, the body will store the excess as fat. Products that are high in fat are usually highest in calories.