How One Man Lost 50 Pounds Using the 5:2 Intermittent Fasting Diet

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Fasting may seem like a drastic way to lose weight, but it can be safe and effective when done in moderation, according to self-improvement blogger Dave Wentworth.

The mechanical engineer, who lives in Michigan, decided to try the 5:2 intermittent fasting diet after joining a weight-loss competition at his job in 2011. Simply put, the diet required him to eat normally five days a week and fast for two.

“In simple terms, it’s eating as normally as you can for five days of the week and then on two days — for two 24-hour periods — you don’t eat,” Wentworth tells NBC News BETTER.
That doesn’t mean you starve yourself for two days, Wentworth explains. It means that for two non-consecutive days of the week, you eat only one meal. On fasting days, for example, he skipped breakfast and lunch, and only ate dinner.

“It’s a simple way to get basically a 20 percent reduction in total calories overall,” says the engineer.

Here’s the breakdown of Wentworth’s diet:

Monday: Eat normal (or what’s considered a normal amount of calories for one day)
Tuesday: Fasting day (skip breakfast and lunch)
Wednesday: Eat normal
Thursday: Fasting day
Friday: Eat normal
Saturday: Eat normal
Sunday: Eat normal
Wentworth says the diet worked because it allowed him to be flexible.

It’s a simple way to get basically a 20 percent reduction in total calories overall.
It’s a simple way to get basically a 20 percent reduction in total calories overall.
NON-FASTING DAYS

Five days out of the week, Wentworth ate what would be considered a normal amount of calories to eat in a day. (How many calories a person needs to eat in a day varies between individuals and gender.) Like any diet, the 5:2 diet required him to be somewhat careful about what he ate, he says, since he had to ensure he was staying at a caloric deficit throughout the week.

For example, he would have a protein shake for breakfast, a chicken stir fry for lunch and a typical dinner with meat and vegetables, he says.

“Kind of the standard grain, protein and a veggie kind of setup,” Wentworth explains.

You can eat some unhealthy foods, he added, but don’t overdo it.
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FASTING DAYS

On two non-consecutive days of the week, Wentworth skipped breakfast and lunch, but ate dinner.

Since he was going almost an entire day without food on those days, he says he had to be careful not to gorge himself at dinnertime. He said he ate a lot of vegetables and fiber-rich foods.

“I … knew that if I ate more veggies and whole grains that I could eat a lot more volume, which also helps,” he says. “If I had like buffalo wild wings or something — fast food of some sort — then it’s like there’s only a little bit of food for the same amount of calories.”

Healthier foods filled him at a fraction of the calories, he explains.

“You can eat a salad that weighs five pounds, but it’s only 1,000 calories,” he says. “You can eat a ton of food and get a ton of nutrition and feel stuffed, but not have gone outside your calorie budget.”

TRACK YOUR CALORIES AND WEIGHT, AND AVOID TOO MUCH EXERCISE

Wentworth recommends tracking your calories when you start the 5:2 diet. Doing so will help you make sure you’re not overeating during meals, especially on fasting days.

Your body weight may fluctuate drastically from day to day, especially on non-fasting days, he says. To get an accurate understanding of how much weight you’re losing, he said, weigh yourself once a week instead of every day.

“It depends on the person, but tracking your weight weekly as opposed to daily can be helpful because with fasting there can be a big water shift [in your weight] every time you return to eating,” he says. “So you might think, ‘Oh, I fasted, but I haven’t lost any weight.’”

Lastly, he recommends avoiding endurance sports like long-distance running while on the 5:2 diet.

“It just drives your hunger upwards,” he says.

“It’s like burning the candle at both ends,” says Wentworth. “You can’t not have nutrition and try to expend thousands of calories.”

KEEPING THE WEIGHT OFF

After six months on the diet, Wentworth lost about 50 pounds. He said the diet worked for him because he only had to restrict his eating twice a week instead of every single day, and could still eat some unhealthy foods.

With the excess weight gone, Wentworth says he has “a ton of energy.” He still tracks his weight and goes back to fasting temporarily if he sees it start to go up.

“I run a lot now,” Wentworth says. “I feel great.”

HOW TO LOSE WEIGHT ON THE 5:2 FASTING DIET

For five days a week, eat what is considered a normal amount of daily calories, and fast for two non-consecutive days: On fasting days, skip two meals, and have one normal meal. You can switch your fasting days around if you need to be flexible.
You still need to be careful about what you eat: To lose weight, you need to keep a caloric deficit throughout the week. Stick to mostly fibrous foods, like whole grains and veggies, especially on fasting days, to help yourself feel full. Some unhealthy foods are fine, just don’t overdo it.
Track your calories and weight, and avoid too much exercise: Keep track of your calories to make sure you aren’t overeating, especially on fasting days. Track your weight by weighing yourself once a week instead of every day, since your weight may fluctuate drastically from day to day. Avoid endurance sports like long-distance running that will spur your hunger.

 

 

[“source=nbcnews”]

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