How can physical fitness boost your mental energy and/or mental capacity?

Exercise (a.k.a physical fitness) improves mental health by reducing anxiety, depression, and negative mood swings and improves self-esteem and cognitive function (term for learning new things pretty much).

Explanation:

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.

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