Well the hormone would be one thing. I'd say because it strengthens our heart muscles and trains our breathing pattern to be more effective. These would lead to more efficient transportation of blood and hence oxygen to our whole body including our brain. Our brain becomes more alert, and our body more energetic.
Need more information :O.
Who is "Them"?
Yes because sugar can cause important public health questions surrounding access to foods and drinks that have been proven to increase obesity and disease risk and can cause serious health consequences
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