Saturday, April 12, 2008

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Aerobic means "with oxygen," and anaerobic means "without oxygen." Anaerobic exercise is the type where you get out of breath in just a limited moments, like when you lift weights, when you sprint, or when you climb a long flight of stairs.The simplest method of starting is just that, simple. Select the number of minutes you'd like to walk for (let's say 20 minutes for your first walk) and head out the door or step on the treadmill and go for it. Remember that to make it aerobic you want to walk at a pace that leaves you feeling "warm and slightly out of breath" and one that you can sustain for the time that you planned. In this case, set your sights on completing 20 minutes and pace yourself to do it. If you start too quickly, then you may poop out too soon. It's not important how fast you do it; it's just important that you attempt to complete the time. If you find 20 minutes is too ambitious, then start with less. Again, the most important thing is to get started. You can always add more later on.









On the other hand, some people like to know with more precision how their body is doing during exercise. If that's the case for you, then taking your heart rate during exercise and using a target heart rate training zone might be just the ticket. Target heart rate zones range anywhere from 50% to 100% of your maximum heart rate (your maximum heart rate is based on your age). Aerobic exercise is anything less than 85%, and anaerobic exercise is anything above that. A nice starting point for a sedentary individual is somewhere in the range from 50% to 65% (you can always increase as you get more fit), and 65% to 85% for more conditioned people.

Aerobic conditioning is very specific to the muscles being worked. For example, you can walk ten miles a day and still be somewhat breathless after climbing stairs because you haven't trained the muscles for that specific movement. Aerobic cross-training allows you to develop more comprehensive aerobic training.More advanced fitness programs. If you've completed your walking program, or if you're ready to start at a more advanced level, put together a fitness program tailored to suit your needs -- one that includes a variety of activities you'll enjoy. The President's Council of Physical Fitness says every good exercise program has four essential components:Aerobic activities like swimming, running, stair-step machines, brisk walking, etc.You are much more likely to lose muscle from not eating enough than you are from doing too much cardio. All too often, people are afraid to eat a lot and do a lot of cardio at the same time. It doesn't seem to make sense. Logically, it seems like the two would cancel each other out - but the opposite is correct. Many people believe they must "starve" the fat by drastically lowering calories. Unfortunately, this approach can cause you to lose muscle along with the fat. The only way to maintain your lean mass while losing fat is to feed the muscles with plenty of nutritious calories and at the same time, use the fat off with cardio.



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All that oxygen being pumped by the blood is significant. You may be familiar with the term "oxygen consumption." In science, it's labeled VO2, or volume of oxygen consumed. It's the amount of oxygen the muscles extract, or consume from the blood, and it's expressed as ml/kg/minute (milliliters per kilogram of body weight). Muscles are like engines that run on fuel (just like an automobile that runs on fuel); only our muscles use fat and carbohydrates instead of gasoline. Oxygen is a key player because, once inside the muscle, it's used to use fat and carbohydrate for fuel to keep our engines running. The more efficient our muscles are at consuming oxygen, the more fuel we can use, the more fit we are, and the longer we can exercise.

Do you sometimes get bored with your aerobic exercise? Do you sometimes feel like you're not getting the results you should from your aerobic exercise? If so, then aerobic cross-training is for you.


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