Five Ways to Improve Your Mental Alertness

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Here a five things you can do to stay mentally alert.

Yawning cools your brain, which increases your alertness (source)
Yoga boosts oxygen to your brain for better concentration (source)
Drinking green tea improves your memory & ability to learn (source)
Aerobic exercise helps with age-related memory loss (source)
Dark chocolate contains phenylethylamine and anandamide which increases awareness. (source)

What other ways do you know that help you increase your awareness? Please let us know below.