If you don’t have an established exercise routine, “walking is a pretty good entry point for people,” says Gagliardi. One small study published in The Journal of Exercise Nutrition & Biochemistry found that obese women who did a walking program for 50-70 minutes three days per week for 12 weeks significantly slashed their visceral fat compared to a sedentary control group.

Lose fat with high-intensity interval training (HIIT). If you're trying to lose weight fast, HIIT training can super-charge your metabolism for upwards of 24 hours after exercising.[27] This means your body will continue burning calories long after you've ended your workout. HIIT burns more calories in less time than steady-state cardio. In one study, researchers looked at two groups, one running for 30 to 60 minutes three times per week, the other doing four to six 30-second treadmill sprints, resting for four to six minutes between each sprint. After six weeks, it was found that the group doing HIIT training lost more weight.[28]
Many television ads are now pitching devices that supposedly stimulate muscles to contract repeatedly without exercise. I even saw an infomercial for an "ab belt" that claimed it does the work of 700 sit-ups in 10 minutes! The ad shows people doing various abdominal exercises the wrong way, hating every second of it, versus smiling men and women going about their days with "Ab-whatevers" strapped around them. How enticing!
Carbohydrates are the preferred form of fuel for your body's energy needs. Simple or sugary carbs have their place when you need fast energy, but for the most part you should eat complex or slow-burning carbs (we'll give you examples of these later). The thing about carbs, though, is that after you consume all the carbs your body needs for immediate energy, any excess carbs will be stored as body fat.
Say cheese! Adding some extra calcium and vitamin D to your diet could be the best way to get the flat stomach you've been dreaming about. Over just 12 months, researchers at the University of Tennessee, Knoxville found that obese female study subjects who upped their calcium intake shed 11 pounds of body fat without other major dietary modifications. To keep your calcium choices healthy, try mixing it up between dairy sources, calcium-rich leafy greens, fatty fish, nuts, and seeds.
Who hasn't skipped a meal or two in the hopes of speeding up weight loss? Yeah, you shouldn't do that. Your body needs a regular supply of nutrients to run properly. Allowing large periods of time to pass before fueling yourself up can lead to undesirable physical symptoms, such as headache, lethargy, intense hunger, and overeating. And as any hungry grocery shopper has learned the hard way, it's considerably more difficult to make healthy choices when you're starving (hitting up the bakery section seems like such a good idea when you're famished). Try not to go longer than 4 hours between eating, and keep these 17 snacks that power up weight loss on hand. 

Not much of a coffee drinker? Tea is also a natural diuretic, and types of herbal tea such as dandelion or fennel root can also lend a hand. In fact: When a recent study compared the metabolic effect of green tea (in extract) with that of a placebo, researchers found that the green-tea drinkers burned about 70 additional calories in a 24-hour period.
And maybe a new mattress, because it’s not just the amount of time you spend sleeping that keeps you lean, it’s also the quality of your sleep. Fat cells in your body produce a hormone called leptin that helps the body keep track of how much potential energy (i.e. fat) it has stored. But leptin is only produced during certain stages of sleep. Miss out on those stages because you’re not resting soundly enough, and you’ll disturb levels of the hormone, leaving your body with no real idea of its energy reserves. Consequently, you’ll end up storing calories rather than burning them. 
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