Honestly it's dangerous on your health to loose weight too quickly. Extreme dieting can lead to malnutrition and rapid weight loss can cause problems like gallstones. I know the Biggest Looser makes it all seem so easy to loose fast, but they are constantly watched by drs monitoring everything they do. It's recommended to keep weight loss between 1-2 lbs a week. Usually in your first week that may be a little more depending on how big of a change you make, but an average of 1-2 lbs a week is ideal. I also think it's important to avoid all those easy quick weight loss things- those pills, meals, shakes, etc don't teach you how to keep this weight off. What you really need is a complete lifestyle change so you never ever get back your excess weight.
The first thing you need to do is eat right. NEVER EVER miss a meal, add a couple snacks into your day. If your body isn't getting enough calories or has erratic food schedule it can get confused and start storing fat. Also eating small meals with a couple snacks in between makes sure you don't get really hungry between meals and then over eat come meal time.
Personally I also think it's best to remove all packaged and prepared meals. These typically have lots of sodium, sugars, and junk without enough nutrients. These include the obvious packaged donuts and candies as well as the less obvious white breads, canned veggies, canned soups, and lean cuisine frozen meals. Also as far as your liquids go- get rid of any and all soda, alcohol, and sugary drinks. Diet soda isn't healthy and should never replace water. And red wine, no matter what people say about it's effect on the heart, it is very acidic and can cause problems with your stomach. In my opinion, it's best to just avoid all that junk and drink milk, water, or 100% juice. Just do your best to go for a more natural diet. The less processed and packaged your food is the less "X-factor" stuff is going to be in it.
Second as far as your diet goes you need correct portions. Many sites can help you figure out about how many calories you need to eat based on your sex, height, weight, age, and activity level- just make sure you take these with a grain of salt. These are all averages and what works well for one person won't work the same for another. Also make sure you're not avoiding any foods. Your body needs fats just as much as it needs vitamin C- just keep the amounts right. Try to add some fats to every meal, most of these will come from meat or low fat dairy but some of them can be added with things like nuts, coconut, or avocado (especially if you're a vegetarian). As far as portions go think of a dinner plate, half of it covered with veggies, 1/4 with lean meat (protein source), and 1/4 with a whole grain. If you put this on a lager scale this is about how much of each you should be eating. Most of your diet should be fresh veggies, but you also need a good source of lean meats/dairy, and whole grains in your day. Also fruit - should be in limited amount, you need some but 2-3 a day is typically all a person needs (which is why it's not on the plate, but off to the side). It's really hard to give you exact quantities of anything, but many sites- including this one- will help you track your foods to see if you are missing anything or having too much of something.
You also need exercise. If you're just starting out and aren't very active start with just 30 minutes a day of having your heart rate up for a max of 5-6 days. It's very important not to over stress your body out and keeping at least one day of rest and adding exercise slowly will help prevent this. Over time you can try to build up to about 2 hours a day 5-6 days a week. If your goal is 50 lbs, I'm assuming your really over weight and may have some health issues from this (bad knees/feet/back, exercise induced asthma, etc.). If this is the case you might want to consider starting out exercise with low impact exercise such as swimming, yoga, or walking.
Also it's vital to make sure you really need to loose 50 lbs. Remember BMI ranges are averages and they can be incorrect. If you get to a point where your fat percentage is too low you will get extremely ill. Make sure you double check before you get your heart set on a number or size- the goal is health.
It really isn't safe for your body to lose that much weight... "quickly". Your organs and spinal cord could suffer damage, and that will affect you later in life.
Take things slow. You could lose up to three pounds in a week just by watching your diet and exercising for 45 minutes each day. Find out how much fiber is healthy for your weight, and stick with that. Eat veggies, fruits, lean meats, and nuts.
At the health food store, you can find a product called Get Lost. It's an all-natural, vitamin-based cleanse for the liver, kidneys, GI system, and colon. It's approved by the FDA. It makes you go to the bathroom A LOT but it works great to get rid of toxins and extra water weight. It also helps with bloating. Just that cleanse alone made me lose 5 pounds. It's not shedding anything you need---just stuff that makes you feel gross and prevents you from losing weight.
Also, make sure your hormones are in check and you're taking in enugh vitamins, because both of these will help you lose weight.
I hope this helps! Please be safe!
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