Getting "high" can be an unquenchable desire - one that impacts the human body of the first-time recreational user and severe addict alike. National Geographic goes beneath the skin to reveal how our bodies react to three common drugs: marijuana, cocaine and ecstasy. reveals just what the human body undergoes when drugs are introduced to its organs. Cutting-edge imaging techniques delve deep inside the lungs, heart, blood vessels and brain to give a unique inside-out perspective on its heart-racing, palm sweating and mind warping effects.

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