Blood vessels (veh-suls): The system of flexible tubes—arteries, capillaries and veins—that carries blood through the body. Oxygen and nutrients are delivered by arteries to tiny, thin-walled capillaries that feed them to cells and pick up waste material, including carbon dioxide. Capillaries pass the waste to veins, which take the blood back to the heart and lungs, where carbon dioxide is let out through your breath as you exhale.

Although you won't be able to completely transform your body or even lose more than a few pounds in a month, you can jump-start your weight-loss journey and be well on your way to achieving your goals. Just be mindful that while you can lose weight in a month, you can't specifically target your belly; there's no such thing as being able to spot-reduce fat (your body decides where the fat comes from - yay, genetics!). We tapped registered dietitian and ACSM-certified personal trainer Jim White, who owns Jim White Fitness and Nutrition Studios and helps clients reach their weight-loss goals, for insight on how to lose belly fat in 30 days.
I read this on the recommendation of a colleague. There's plenty of sound advice in this book, including rounding out your meals with healthy snacks and lots of fruits and veggies, as well as tips for staying hydrated and for ensuring your workouts don't work against you. That said, I think the content wasn't for me: Dr. Smith provides a detailed meal plan you must follow for a month. I would have liked this book to include more about his diet philosophy and less menu information. I understand t ...more
We’re continuing to learn that shortchanging our sleep — even for just one night — can lead to less healthy food choices the next day. The latest study took a look at subjects’ MRI scans after a night of sound sleep and again after a night of sleep deprivation. The MRI scans showed that sleep deprivation activates an area of the brain that makes you view food as more desirable. In other words, it prompts cravings. This adds to other evidence showing that insufficient sleep increases hunger while also making us less likely to stay active. Taken all together, it means that a healthier sleep situation can encourage a healthier weight.
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.
They should help keep you from feeling deprived and bingeing on higher-calorie foods. For instance: honey has just 64 fat-releasing calories in one tablespoon. Eggs have just 70 calories in one hard-boiled egg, loaded with fat-releasing protein. Part-skim ricotta cheese has just 39 calories in one ounce, packed with fat-releasing calcium. Dark chocolate has about 168 calories in a one-ounce square, but it’s packed with fat releasers. And a University of Tennessee study found that people who cut 500 calories a day and ate yogurt three times a day for 12 weeks lost more weight and body fat than a group that only cut the calories. The researchers concluded that the calcium in low-fat dairy foods triggers a hormonal response that inhibits the body’s production of fat cells and boosts the breakdown of fat.
Eating less does more for weight loss than exercising more. Consider putting the money you’d spend on a gym membership toward healthy groceries, instead. “Trying to exercise your way out of your weight problem is very difficult (because) it’s very hard to exercise that much,” explained Dr. Aronne. Burning about 3,500 calories equals one pound; someone weighing 150 pounds walking for an hour would burn around 250 calories. “You really need to cut down on calorie intake to lose the weight. Exercise is better at preventing weight gain.” The recommended daily diet is around 2,000 calories, but if you want to lose weight, Dr. Avigdor Arad, the director of the Mount Sinai Physiolab, suggests that women consume between 1,200 to 1,500 calories a day on average, and men between 1,500 and 1,800 calories. But visit your doctor to see how your own metabolism, family history and any medications you’re taking could be influencing how easily you gain and lose weight, and what your nutritional needs are. “There is a lot of variation,” he said.
Based on my experience in nutrition counseling, most of us tend to snack on foods that aren’t nutrient-dense, but are high in calories. For example, skipping sugary beverages is often the easiest way to lose weight faster. You don’t feel full from drinks — even the ones that do contain calories — so swapping those out for sparkling water or unsweetened tea and coffee is the best place to start. Other major culprits often come in refined grains like cereals, chips, crackers, and cookies.
‘Do it for a couple of minutes in bed and you’ll actually be able to wind down and fall asleep more easily. But it’s a skill, so it requires a commitment to practice it, as with anything. Think of it a bit like dating – the first time you do it it’s terrible, it’s uncomfortable, nobody knows what they’re doing, but the more dates you go on the better it gets.
Fathi, Y., Faghih, S., Zibaeenezhad, M. J., & Tabatabaei, S. H. (2016, February). Kefir drink leads to a similar weight loss, compared with milk, in a dairy-rich non-energy-restricted diet in overweight or obese premenopausal women: A randomized controlled trial. European Journal of Nutrition, 55(1), 295–304. Retrieved from https://link.springer.com/article/10.1007/s00394-015-0846-9
Skimp on fluids, and your body will release an antidiuretic hormone that leads to water retention that could affect the scale, Dr. Setlzer says. While this sneaky effect is one reason why the scale is a poor measure of body mass loss, you can outsmart it by drinking more—particularly if you fill your glass with water or non-calorie alternatives like unsweetened coffee and tea.
Rather than a long and low-intensity cardio workout, try the HIIT method of cardio: intense, fast-paced intervals that leave you completely exhausted after only a 20- to 30-minute session. This form of cardio training increases the afterburn effect, allowing your body to continue burning calories long after your workout is over. You can rotate between 30 seconds of your favorite exercises, with rest in between, as long as they work different muscle groups—such as squats, push-ups and kettlebell swings.
It’s stunning how often we eat out of boredom, nervousness, habit, or frustration—so often, in fact, that many of us have actually forgotten what physical hunger feels like. If you’re hankering for a specific food, it’s probably a craving, not hunger. If you’d eat anything you could get your hands on, chances are you’re truly hungry. Learn how to recognize these feelings mistaken for hunger, then find ways other than eating to express love, tame stress, and relieve boredom. But talk to your doctor if you think you’re always hungry for a medical reason. Here are 10 medical reasons you might be hungry.

Falling short on zzz’s is also a surefire way to put your waistline in jeopardy. That’s because sleep deprivation knocks your hunger hormones out of whack, leading to an increase in ghrelin, which stimulates appetite, and a decrease in leptin, which signals when you are satiated. What’s more, research has shown that when you aren’t well-rested, you’re also more likely to reach for junk food (hello Ben & Jerry’s!)—and it may even become harder for you to build muscle mass.


Be choosy about carbs. You can decide which ones you eat, and how much. Look for those that are low on the glycemic index (for instance, asparagus is lower on the glycemic index than a potato) or lower in carbs per serving than others. Whole grains are better choices than processed items, because processing removes key nutrients such as fiber, iron, and B vitamins. They may be added back, such as in “enriched” bread.
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