Horizon - Season 15 (1978)

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Current research into endorphins, how they work and their affect on the brain.

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Know what this is about? Be the first one to add a plot.

Know what this is about? Be the first one to add a plot.

Know what this is about? Be the first one to add a plot.

Know what this is about? Be the first one to add a plot.

Know what this is about? Be the first one to add a plot.

Know what this is about? Be the first one to add a plot.

Know what this is about? Be the first one to add a plot.