In order to optimize your health a good diet is essential. But, with all the fad diets around it can be difficult to know what is 'good'. Nutrition science to the rescue! Though some things are still controversial, numerous studies reinforce the following basic information.A healthy diet requires not just items from the four basic food groups, but in the proper proportion. The average person will need about 2000-2500 calories (sometimes more for larger men, less for women and those looking for rapid weight loss). About 50% of those calories should come in the form of carbohydrates, with 30% from fats (yes, fat is good!) and 20% from protein.Carbohydrates are the main source of compounds needed for energy. Simple sugars, such as glucose and fructose, are rapidly broken down in the intestine and absorbed. Some processing starts the minute they hit your tongue.
Complex carbohydrates - starches, such as those found in potatoes - take longer, but are also healthy in moderation.Fats are chemically similar to carbohydrates, and contain fatty acids essential to health. Proteins are lysed (split) to make amino acids, that are then recombined to form proteins used in muscles and other structures.Meat is a valid and healthy source of protein for almost everyone. About 3 ounces per meal is about right for the average sized person. A cup of pasta is a good source of carbohydrates. Two cups of leafy green vegetables supply fiber, minerals and vitamins.
A balanced meal can be made up of a serving of meat or other protein source, starchy carbohydrates such as pasta, rice, corn or potatoes, and fruit. Easy on the butter or margarine, go light on cheese, sauces and anything high in sugar or fat.Though you could get the basics from a variety of sources, when considering weight control in addition to getting the proper balance, it's important to know which sources are high in what.Fat contains nine calories per gram, which is double than other energy sources. Thus, you need to keep those foods high in fat down to modest levels. That also helps control cholesterol levels. All sources of carbohydrates have four calories per gram. But healthy sources also contain needed minerals, vitamins and fiber. Some examples are fruits (apples, pears, peaches), nuts (walnuts are lower in fat than peanuts or cashews, for example) and grains (for fiber and minerals).
Why is candy bad, unless consumed in very modest portions? Because they are designed to be high in fat, high in sugar with much lower amounts of helpful nutrients. Neither fat nor sugar are harmful in moderation. Indeed, they're essential to good health. But when consumed in a form that contains an excessive proportion, they provide enormous calories and fewer other nutrients.A single Snickers candy bar, for example, contains 63g, with 53g of sugar, but only 2g of fiber. A cup of broccoli, by contrast, has only 6g total, of which 2.5g are fiber, 1.5g are sugars. A cup of sweet corn has 31g total, 21g are starch (complex carbohydrates), 3g of fiber.Making a list of items you consume will show you the relative amounts of helpful nutrients - and how many calories each contains. Putting a little arithmetic into your diet plan will help you reduce the number you obsess over - your weight.
Sunday, October 18, 2009
Tuesday, October 6, 2009
ABDOMINAL EXERCISES- BENEFITS AND LIMITATIONS
Anyone interested in fitness wants to have great looking abs - firm, rippled and well-toned, along with a trim waist. All those are achievable, but beware accepting any myths about flat stomachs and spot reduction around the waist.
As you exercise, you consume energy measured in calories. When you consume enough to deplete the available energy, and enough to reduce the sugars that convert easily, the body goes after stored energy. That stored energy is largely in the form of fat deposits in adipose tissue. Remember that nutrition is an important part of any exercise program.
But that process takes place non-selectively. You don't get to choose which fat deposits the body converts. That means, you can't 'spot reduce' by working on your abs. The effect is still achievable, but doing abdominal exercises alone doesn't target that fat.
When you focus on the abs, you will build strength in that area, by increasing the muscle mass in those muscles. That's helpful for a number of reasons. It keeps a firm, strong layer of muscle which helps keep the stomach and other internal organs well inside the plane defined by your hips. You get a nice trim, flat look.
Abdominal exercises help in another way, too. Since the abdominals are large muscles, they consume a proportionately larger percentage of energy than, say, your jaw muscles. That means that as you work them, they have to be supplied with more energy to move through the range of the exercise. That burns many calories, resulting in weight loss and fat reduction.
The effect is also limited by genetics and age. Some people store more fat around the middle more readily than others. Gender, obviously, makes a difference as well.
Many women in their 40s will naturally develop a pouch in the lower abdomen as their hormones change. Many men will naturally develop 'love handles' at the side, since they store fat in adipose tissue there more readily in their 40s than they did in their 20s.
In order to achieve the desired effect you have to approach muscle fatigue. There's no need to perform a hundred crunches to accomplish that. Done correctly, 20 reps is enough. You don't even have to go to the gym. You can do pelvic tilts while sitting in a chair in the office.
But for best effect, warm up and try the following:
Lie on your back, with your knees raised and cross your arms across your chest. Then lift your shoulders off the floor and hold for 30 seconds. You can feel the effect on your abs already. To make the exercise more difficult, put your hands at the side of your head. Don't use your hands to lift your head, just keep them still. For maximum effort, put your hands above your head, then perform the same shoulder lift and hold, focusing on the abs.
Feel the burn. Repeat daily for 10 minutes or twenty reps, in a few weeks, you'll see definite results.
As you exercise, you consume energy measured in calories. When you consume enough to deplete the available energy, and enough to reduce the sugars that convert easily, the body goes after stored energy. That stored energy is largely in the form of fat deposits in adipose tissue. Remember that nutrition is an important part of any exercise program.
But that process takes place non-selectively. You don't get to choose which fat deposits the body converts. That means, you can't 'spot reduce' by working on your abs. The effect is still achievable, but doing abdominal exercises alone doesn't target that fat.
When you focus on the abs, you will build strength in that area, by increasing the muscle mass in those muscles. That's helpful for a number of reasons. It keeps a firm, strong layer of muscle which helps keep the stomach and other internal organs well inside the plane defined by your hips. You get a nice trim, flat look.
Abdominal exercises help in another way, too. Since the abdominals are large muscles, they consume a proportionately larger percentage of energy than, say, your jaw muscles. That means that as you work them, they have to be supplied with more energy to move through the range of the exercise. That burns many calories, resulting in weight loss and fat reduction.
The effect is also limited by genetics and age. Some people store more fat around the middle more readily than others. Gender, obviously, makes a difference as well.
Many women in their 40s will naturally develop a pouch in the lower abdomen as their hormones change. Many men will naturally develop 'love handles' at the side, since they store fat in adipose tissue there more readily in their 40s than they did in their 20s.
In order to achieve the desired effect you have to approach muscle fatigue. There's no need to perform a hundred crunches to accomplish that. Done correctly, 20 reps is enough. You don't even have to go to the gym. You can do pelvic tilts while sitting in a chair in the office.
But for best effect, warm up and try the following:
Lie on your back, with your knees raised and cross your arms across your chest. Then lift your shoulders off the floor and hold for 30 seconds. You can feel the effect on your abs already. To make the exercise more difficult, put your hands at the side of your head. Don't use your hands to lift your head, just keep them still. For maximum effort, put your hands above your head, then perform the same shoulder lift and hold, focusing on the abs.
Feel the burn. Repeat daily for 10 minutes or twenty reps, in a few weeks, you'll see definite results.
Subscribe to:
Posts (Atom)