Neuroscience

State of moderate arousal leads to optimum performance

If you want to know who is ready to perform at the highest level, look them in the eyes—or more specifically, look at the diameter of their pupils, Yale School of Medicine researchers report.

Cardiology

Researchers uncover optimal framework for heartbeats

(Medical Xpress)—The heart maintains a careful balancing act; too soft and it won't pump blood, but too hard and it will overtax itself and stop entirely. There is an optimal amount of strain that a beating heart can generate ...

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