You won t lose that much weight in that short period of time in a healthy way. You need to change your lifestyle in order to achieve any kind of long term weight loss. Any quick fixes you will regain the weight and that is a fact.
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20 pounds in 30 days sounds serious!I knew guys in Army basic training who lost more than 40 pounds in 8 weeks. BUT! They ate 3 square meals a day and were under constant supervision. Needless to say, the exercise program was first-rate! LOLI d really check with your parents and a doctor before you try and set that goal for yourself.
You could completely cut out carbs and sugars. You will definitely drop 15-18 pounds in that period of time.
Sorry to say you can t loose that much weight in that amount of time.You shouldn t diet as that is a short term thing, you should just change your lifestyle habits as much as you can. cut out the sugary drinks, chocolate bars etc. Join a team and do some sports to get exercise, take the dog for a walk. Just little steps.Ask your mum/dad/whoever cooks to buy healthier foods - it will do you all good.The key is to take little steps and have realistic goals to losing weight and getting fit otherwise you will just keep failing at it and then you will constantly be depressed and think it is impossible.Good luck!
13 is a very young age to start a diet, and unless you are seriously overweight I would strongly advise you not to start anything without talking to your doctor. At that age your body is still developing and many girls that are not overweight mistake things like their hips spreading and gaining curves as gaining weight. At this age, it is important that you get enough vitamins and other nutrients.If you are overweight, you should forget the idea of a diet and see your doctor about a lifestyle change. If you re eating lots of junk food (fast food, cakes, candies, cookies, and sodas) then you might consider cutting back on those things. Eat more fruits, vegetables, whole grains, and lean proteins. Also drink lots of water. These are things you should do at any age whether you re trying to lose weight or not. Also, a treat every now and then will not hurt you.If you are not exercising, you should start doing something light (like walking 20 minutes a day) and work up to doing more. Also, try to find something you like to do like dancing, running, aerobics, etc.Safely losing 20 lbs. in a month probably isn t a reasonable goal. At your age, it is really important to talk to your doctor about a weight loss program and what would be a healthy weight for you.