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.
You may notice on the nutritional labels of the foods you buy that the percent daily values are based on a 2,000 calorie diet -- 2,000 calories is a rough average of what people eat in a day. But your body might need more or less than 2,000. Height, weight, gender, age and activity level all affect your caloric needs.