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Often, physical activities or health, in general, are full of misconceptions or wrong theories which could be even harmful for our body. We need to be aware of this situation and search wisely in order to identify reliable sources of information. 
Take a look at this video and use it as an advise to become strict and rigorous when starting new workout routines or add health habits to your life....
"FOOD FOR THOUGHT":

- Describe, using your own words, what a MYTH is in terms of Physical Education or Health?

- Why do you think they are incorporated in our society?

- What are the consequences of this MYTHS?

- How do you think we could prevent ourselves from suffering the damages of this MYTHS?

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Nature Reviews Neuroscience 958-65 (January 2008) | doi:10.1038/nrn2298

Be smart, exercise your heart: exercise effects on brain and cognition.
Charles H. Hillman, Kirk I. Erickson & Arthur F. Kramer

Abstract

An emerging body of multidisciplinary literature has documented the beneficial influence of physical activity engendered through aerobic exercise on selective aspects of brain function. Human and non-human animal studies have shown that aerobic exercise can improve a number of aspects of cognition and performance. Lack of physical activity, particularly among children in the developed world, is one of the major causes of obesity. Exercise might not only help to improve their physical health, but might also improve their academic performance. This article examines the positive effects of aerobic physical activity on cognition and brain function, at the molecular, cellular, systems and behavioural levels. A growing number of studies support the idea that physical exercise is a lifestyle factor that might lead to increased physical and mental health throughout life.


Nature Reviews

Article in spanish