Can Humans Change Their Sleep Cycle?

Have you ever wondered why some people are early birds, and others are night owls? Are you the type who always falls asleep at 8 pm no matter what, or do you stay awake until 2 am finishing work? It really gets you thinking-Why DO we have sleep.

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Why Does My Voice Sound Like This?

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Let's walk through how our immune system evolved and what affects our allergies.

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