You see someone stretch their jaw, squeeze their eyes shut and take a long, involuntary breath. A few seconds later, your own mouth opens. Sometimes you do not even need to see the yawn: hearing one, reading about yawning or simply thinking...
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Watch a turkey closely and its stare can seem almost unnervingly steady. Its eyes sit high on the sides of its head, scanning the surroundings while the bird walks, feeds and watches for dan...
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You are almost asleep when the floor seems to disappear. For a fraction of a second, your body feels as though it has stepped off a ledge. A leg kicks, an arm jerks or your whole torso jumps...
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Step out of a dark cinema into brilliant afternoon sunlight and, for some people, the reaction is immediate. The eyes narrow, the nose begins to tingle and within seconds comes an involuntar...
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