What are the most important benefits of cardio?

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As you saw in the last two blogs, there are two distinct factors that make movement a cardiovascular exercise (cardio):

  1. Moving a large amount of your muscles circulates more blood through your cardiovascular system causing your heart to beat stronger (not just faster).  
  2. Moving continuously for longer than two minutes so your body starts relying on your oxygen-using, longer-lasting system for fueling muscles.

That continuous, large-muscle type of movement creates a cascade of events in your body with instant or, in other words, Real-time Results such as:

  • De-stressing. The hormones and chemicals produced when your muscles contract in this way shift your nervous system out of the stress response and into the relaxation response (as long as the way you are doing cardio is not more stress-producing for you).
  • Lowering blood pressure. To help your blood vessels handle the increased pressure of the stronger heart contraction, your body releases nitric oxide, a chemical that relaxes blood vessels. This stays in your system for up to 22 hours after one bout of moderate intensity cardio, helping to keep blood pressure at a healthier level.
  • Better blood sugar levels. Because your muscles are using the sugars (glucose) in your blood to help fuel muscles, cardio helps you manage elevated blood sugar levels. Cardio also send signals to the receptors in muscles to be more sensitive to your own insulin. This helps lower blood sugar instantly and for a few hours after you stop exercising.
  • Boost sleep quality. Cardio during the day means that night you have a better chance of falling asleep easily and sleeping more soundly through the night. As we all know, a good night’s sleep means a better tomorrow.
  • Better digestion. The repetitive, continuous movement of cardio helps your digestive system improve its mobility, making it work more ‘smoothly’ from top to bottom.
  • Lifts mood. After about ten minutes of cardio, your brain releases a dose of various brain chemicals that improves mood, calms your nerves, and boosts your ability to hands life’s stressors. These are the same chemicals that are in many mental health medications. They are also the ones released when you eat comfort food. The difference is that cardio releases them in the balanced way that they were designed to elevate your mood naturally.
  • Immune protection.  is boosted for up to several hours. One way is by increasing natural killer cell activity—the first line of defense against colds and flu as well as most forms of cancer.
  • Improves focus. As little as ten minutes of cardio increases the ability of your brain to focus. Cardio can be used as an immediate and effective part of treatment for people with ADD or anyone living in this fast-paced, distracted culture.
  • Strengthens memory. Each bout of cardio stimulates the growth of new brain cells like nothing else does. Your brain releases BDNF, a chemical that has been called Miracle Grow for the brain. Even better, it boosts the parts of the brain that stores memories. Exercising before an exam has been shown to help students improve grades and exercise has helped people concerned about memory loss with aging get more out of brain-training exercises.  

Take a moment to ask yourself, Which of those Real-time Results of cardio really got my attention? These are the results of cardio that are most important. Why? Because they matter most to your brain.  

Even though sometimes it doesn’t seem like it, your brain is hardwired to take care of your body in every moment. When you use the long-term benefits of cardio, like weight loss or health protection, to get motivated to do cardio, it just does not work. Your brain is most motivated by what will make you feel and function better now.  

There are, however, a few Real-time Results of cardio that are not helpful because they are based on misconceptions and marketing.  The top three Empty Results to watch out for are:

  • Sweat: All that large muscle, continuous movement produces heat. That increases your body temperature, possibly causing you to sweat. Whether you sweat depends on many factors including genetics, hydration level, your clothing, the type of activity you are doing, the temperature of the air, the humidity of the air. The fact is that sweat does not mean you ‘got a good workout’. It only means you need to drink more water to rehydrate.  
  • Muscle burn: Feeling the burn may be an outdated saying, but the connection between muscles burning and the benefit of exercise is still alive and well in the minds of many.   You might be told you are ‘working’ certain parts of the body, implying that the burning sensations means you are burning more fat in those areas. The reality is that the burn is just the sensation of muscles fatiguing, not fat melting.  
  • Burning calories:  Although it appears to be pretty easy to find out how many calories you burn with cardio, it really isn’t. The calories your body burns, even for the same exact level of exercise, vary too much to be predictable and the numbers flashing in front of you are only a rough estimate. Burning calories is not as important as we have made it out to be.  More important for weight loss is doing cardio to feel better now, so you are less likely to reach for food to do that.

Take a moment to create your own list of Real-time Results from cardio to help you stay naturally and easily motivated to use this incredible resource for feeling and functioning your best every day.  

Next week, we’ll take a tour through the unique Real-time Results of strength training.  

Whole-heartedly,

Janet

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