Losing weight quickly is a matter of coordinating several methods of weight loss, including aspects of diet and exercise. One of the pitfalls of such a process, however, is losing weight so fast that it presents a threat to other aspects of your health. Losing 30 lbs. as quickly as possible while remaining healthy should take several weeks. For best results, follow the instructions below.
Step 1
Adjust your diet to form a caloric deficit. Start by providing a basal metabolic rate calculator with your age, gender, height and weight. This will provide you with an approximate value for the number of daily calories you need to maintain your current bodyweight. Since your goal is to lose weight as quickly as possible, build a daily diet consisting of approximately 1,000 calories less than your basal metabolic rate. Since 1 lb. of fat is equivalent to 3,500 calories, this will cause you to lose about 2 lbs. of fat per week through calorie restriction alone, creating a 15-week ceiling on your weight-loss plan. In constructing your new diet, avoid simple carbohydrates such as sweets, desserts and soft drinks; this should constitute the bulk of your deficit.
Step 2
Replace at least one daily serving of carbohydrates with an equivalent serving of protein. For instance, replace a serving of breakfast toast with an egg white omlette. Not only is protein less calorie dense than carbohydrates, it also has the special property of decreasing appetite in those who are experiencing a calorie restricted diet. This will help you stick to your diet over the course of the several weeks it will take you to reach your 30-lb. weight-loss goal. Other excellent sources of protein include meat, fish, beans, tofu and even nuts. If you wish, you may substitute a serving of high-quality whey protein, available for purchase at most health food stores.
Step 3
Perform cardiovascular exercise every day. This will both burn fat directly and exert a positive effect on your metabolism, allowing your body to burn fat more efficiently even during downtime. As such, you'll be able to significantly cut down your 30-lb. weight-loss period from the 15 weeks projected through diet alone. At first, your sessions may last as little as 15 minutes. As your cardiovascular health and fitness improve, however, aim to increase the duration of your sessions up to one hour over time. Since you'll be doing so much of it, select an activity or activities that you enjoy, so long as they'll reliably increase your heart rate for the prescribed periods.
Tips and Warnings
- If you find yourself losing significantly more than 2 lbs. per week, adjust your caloric intake and exercise schedule as necessary to slow your weight loss. This rate of weight loss could lead to health problems.
- Always consult your doctor before embarking on an unfamiliar weight-loss program.



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