Q: how can i lose 50 pounds in 4 months. Im 243 pounds and my height is 5'11.

A: 4 months to lose those 50 pounds is a little faster than what I would normally recommend, but you are quite a bit overweight so you might be able to pull it off. Certainly you should be able to reach your goal within one year, if not four months. Start by reading my articles: How To Lose Fat, Nutrition, and Weight Training to build a knowledge base of how to best lose fat and keep it off. Then you can use Fitness Guide to get a starter program for yourself, but instead of specifying 243 pounds as your weight, put 190 or so to get a more aggressive diet program. It will give you a starter program which you can then customize to fir your tastes and schedule -- probably start by consolidating all the meals into 5-6 per day -- just keep the overall calories and protein/carbs/fats about what the program suggests. Then get eating right, get exercising, and keep track of your weight and aim to lose 2-3 pounds weekly. If you are not losing those 2-3 pounds per week you'll need to decrease calories slightly. You may want to register for my site and start your Fitness Blog so I can monitor your progress and suggest changes if needed (it's all free, of course).