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    Regular exercise changes the structure of our bodies’ tissues in obvious ways, such as reducing the size of fat stores and increasing muscle mass. Less visible, but perhaps even more important, is the profound influence exercise has on the structure of our brains – an influence that can protect and preserve brain health and function throughout life. In fact, some experts believe that the human brain may depend on regular physical activity to function optimally throughout our lifetime.

    Many studies suggest that exercise can help protect our memory as we age. This is because exercise has been shown to prevent the loss of total brain volume (which can lead to lower cognitive function), as well as preventing shrinkage in specific brain regions associated with memory. For example, one magnetic resonance imaging (MRI) scan study revealed that in older adults, six months of exercise training increases brain volume.

    Another study showed that shrinkage of the hippocampus (a brain region essential for learning and memory) in older people can be reversed by regular walking. This change was accompanied by improved memory function and an increase of the protein brain-derived neutropic factor (BDNF) in the bloodstream.

(Áine Kelly. https://theconversation.com, 17.11.2020. Adaptado.)

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    Regular exercise changes the structure of our bodies’ tissues in obvious ways, such as reducing the size of fat stores and increasing muscle mass. Less visible, but perhaps even more important, is the profound influence exercise has on the structure of our brains – an influence that can protect and preserve brain health and function throughout life. In fact, some experts believe that the human brain may depend on regular physical activity to function optimally throughout our lifetime.

    Many studies suggest that exercise can help protect our memory as we age. This is because exercise has been shown to prevent the loss of total brain volume (which can lead to lower cognitive function), as well as preventing shrinkage in specific brain regions associated with memory. For example, one magnetic resonance imaging (MRI) scan study revealed that in older adults, six months of exercise training increases brain volume.

    Another study showed that shrinkage of the hippocampus (a brain region essential for learning and memory) in older people can be reversed by regular walking. This change was accompanied by improved memory function and an increase of the protein brain-derived neutropic factor (BDNF) in the bloodstream.

(Áine Kelly. https://theconversation.com, 17.11.2020. Adaptado.)

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Is it true that we only use 10 percent of our brain?

    This is an urban myth: scans show that most of the brain is active even when we’re not doing much. It’s true that brains are adaptable, and we have huge potential to learn new skills, but this happens mostly via the formation of new connections and networks in the brain, not through the activation of previously inactive areas.

    The brain is a huge energy consumer, and it wouldn’t make sense for us to have evolved to use a fraction of such a costly organ.

(Christian Jarrett. www.sciencefocus.com. Adaptado.)

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Is it true that we only use 10 percent of our brain?

    This is an urban myth: scans show that most of the brain is active even when we’re not doing much. It’s true that brains are adaptable, and we have huge potential to learn new skills, but this happens mostly via the formation of new connections and networks in the brain, not through the activation of previously inactive areas.

    The brain is a huge energy consumer, and it wouldn’t make sense for us to have evolved to use a fraction of such a costly organ.

(Christian Jarrett. www.sciencefocus.com. Adaptado.)

Leia o texto para responder à questão.

Is it true that we only use 10 percent of our brain?

    This is an urban myth: scans show that most of the brain is active even when we’re not doing much. It’s true that brains are adaptable, and we have huge potential to learn new skills, but this happens mostly via the formation of new connections and networks in the brain, not through the activation of previously inactive areas.

    The brain is a huge energy consumer, and it wouldn’t make sense for us to have evolved to use a fraction of such a costly organ.

(Christian Jarrett. www.sciencefocus.com. Adaptado.)

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