How best can a 220 pound 15-year-old lose 66 to 70 pounds?
First off, see a doctor, seriously, you need medical attention of you are that overweight at 15.
Secondly, it's really rather simple, EXERCISE! You should be doing around 5 hours a week, if not more in order to be able to eat 2000 calories a day without gaining weight, talking of which, restrict faithfully if you want to see results, avoid 'fatty' foods such as crisps, chocolate and fried foods and instead go for fruit, veg, lots of water and good carbs like brown rice and oats.
To permanently lose 50 pounds - it'll take you around 5-to-8 months if you go on a proper diet & exercise and the more overweight you are... The quicker you'll lose 50 pounds. For example a 300 pound person will lose 50 pounds in maybe 3-5 months because there bodies (because of excess weight) burn more calories than a person at a low weight and... It may actually take a 200 pound person 5-8 months…
To lose a single pound, you need to burn an extra 3,500 calories. The generally-accepted formula for total calories burned per mile of running is .75 your weight in pounds. Therefore, a 126 pound person can expect to burn approximately 96 calories?æper mile, and would need to run almost 36.5 miles to lose one pound.