When it comes to weight loss, celeb trainer and New York Times bestselling author Harley Pasternak, MSc, has a catchphrase: "Strong in the gym, lean in life." The Fitbit ambassador, nutrition scientist, and personal coach to the likes of Amy Schumer, Kim Kardashian, and Rihanna has told POPSUGAR on numerous occasions that the best way to lose weight is easier than you think: just walk more. Here, Harley makes his compelling case and shares a simple, month-long plan to get you started.
• “Must Haves”: ‘Must haves’ are things that you absolutely must have in your diet or it’s a no-go. Now, don’t get me wrong, chances are that there will be some things you’ll have to remove if they’re going to impede your progress (like trigger foods); but generally, these will only amount to a small number of things, whereas the must haves will be the overarching things, like certain foods, macros, etc.
Grazing is a surprisingly good idea because it helps you avoid metabolic slowdown. "Your body will be tricked into thinking it's constantly eating, so it will never slow your metabolism down," explains Bauer. Aim for five small meals (200 to 500 calories) a day rather than three large ones. Also try not to go more than four hours without eating — if you eat breakfast at 7am, for example, have a snack at 10am, lunch at noon, another snack at 3pm and dinner at 7pm.

That said, a Medicine & Science in Sports & Exercise study found that runners lost more weight than walkers over a six-year period, possibly because of the afterburn effect. “Running at a high intensity will create an afterburn, which is when your body continues to burn calories when you’re no longer moving,” Rubin says. She suggests starting with three 30-minute runs a week, sprinting for 30 seconds then recovering for 30 seconds to a minute.
We now know that this type of fat, called visceral fat, is metabolically active and churns out stress hormones like cortisol and inflammatory substances called cytokines that affect you body’s production of insulin. The result is worse than just being generally overweight; you’re looking at increased risks of type 2 diabetes, high blood pressure, high cholesterol, heart disease, stroke, some cancers, and even dementia.
Weight training is the ultimate way to burn calories fast. "A pound of muscle burns up to nine times the calories of a pound of fat," explains Richard Cotton, M.A., chief exercise physiologist for myexerciseplan.com. Weight training increases your resting metabolic rate, which is the number of calories you burn while sitting on your butt. What's more, it gives your metabolism an added boost after you exercise, staying in overdrive for up to two hours after the last bench press, according to a study published in Medicine & Science in Sports & Exercise. Strapped for time? Try these quick moves: squats, bench step-ups, lunges, push-ups, pull-ups and planks. In a pinch, just do single sets of 10 for each exercise — you'll get optimal results for the time invested.
After having my baby six months ago, I worked hard to slowly restore and heal my body. I did exercises to heal my ab separation and gradually got back into working out. It was not until the FASTer Way that I began to see fat loss. In the past six weeks I have seen my body shape and size begin to return to "normal". My postpartum goal has not been to get my body back but to build a new, fit body. I finally feel fit again! I'm excited to continue to see progress through this lifestyle!
The final possible culprit behind stubborn weight issues may be the stress hormone, cortisol. Too much cortisol will increase hunger levels, bringing along subsequent weight gain. The most common cause of elevated cortisol is chronic stress and lack of sleep (see tip #10), or cortisone medication (tip #9). It’s a good idea to try your best to do something about this.
Toning your abs when trying to lose belly fat is crucial as well. To make a traditional plank routine more challenging, add in side planks. Roll onto your left forearm and stack your right foot on top of your left. Hold this position for 60 seconds, then switch sides. Having only two points of contact rather than four works your core harder and challenges your obliques as well.
There are a variety of definitions of what moderate-intensity exercise is, but it typically falls between about 70 to 80 percent of your maximum heart rate, which would be a level 4 to 6 on a 10-point perceived exertion scale. That means you are breathing harder than normal but can carry on a conversation without much difficulty and you feel pretty comfortable with what you're doing. The American College of Sports Medicine (ACSM) often recommends this level of intensity in its exercise guidelines. The lower end of this range usually incorporates the fat burning zone.
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The probiotics in yogurt can support a healthy gut and your overall wellness. “When your immune system is working well, your gut and brain talk to each other. If you struggle a lot with stress eating, maintaining good digestive health helps nourish a healthy gut so you feel calmer and avoid stress eating,” says Cording. Similar to milk, your best bet is to skip the low-fat varieties—go for full-fat Greek yogurt or Skyr instead.
Eat more fat: The idea that eating fat makes you fat has been dethroned hard in recent years. And in fact, dietary fat can help you burn more off your body—as long as you’re eating the right kinds. Healthy polyunsaturated or monounsaturated fats—like salmon, trout, avocado, sunflower oils, olive oil, and nuts—can decrease appetite, improve heart health, and stabilize glucose levels which can help trim body fat, Montenegro explains.

I want to believe that most of you have some semblance of what ‘healthy’ foods are, and if you don’t – please refer to the pretty picture I painstakingly drew below (because apparently olive oil bottles don’t give a fuck and are impossible to draw). There, you’ll see that some foods should be limited while other foods should make up the bulk of your diet.
Once again, it's about hormones. At night your insulin sensitivity decreases, meaning your body must release more insulin than usual to put any carbohydrates you eat at night to use in the body. And by now you know that higher insulin levels can decrease fat-burning and enhance fat storage. In addition, the body naturally produces a fat-liberating hormone called growth hormone within the initial 90 minutes of sleep.
If you want to lose weight, you’d better avoid special “low-carb” products that are full of carbs. This should be obvious, but creative marketers are doing all they can to fool you (and get your money). They will tell you that you can eat cookies, pasta, ice cream, bread and plenty of chocolate on a low-carb diet, as long as you buy their brand. They’re full of carbohydrates. Don’t be fooled.
When attempting to lose body fat, insulin control is crucial. The total amount of insulin released by the body isn't related to just how many carbohydrates you eat but how fast those carbs are digested. Refined carbs digest quickly, raising insulin levels substantially, which is why you should avoid them. But if you do happen to eat, say, a bowl of cold cereal (typically a fast-digesting carb), you can still take measures to ensure those carbs digest more slowly. This will cause less insulin to be released and therefore have less of an impact on your ability to burn fat.
Water isn’t just a calorie-free beverage, it’s also essential to the process of metabolizing fat, known as hydrolysis, says Pence. So it’s important to drink enough fluids every day—and you’ll need even more if you’re overweight. A good rule of thumb is to drink a milliliter of water for every calorie you consume. Not into the metric system? If you’re following a 2000-calorie diet, that comes to 67 ounces or just over a half gallon of water.
2. Beta-alanine: This one doesn’t directly burn fat, but it does help you work out harder and longer, which in turn lets you melt that extra layer. The non-essential amino acid converts to carnosine, which is one of the strongest buffers against your muscles getting fatigued. Because carnosine keeps your muscles from calling it quits, studies have found beta-alanine can help your performance during HIIT, increase strength, and even help you gain more muscle to then reap all those metabolism boosts.
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