Mark Cavendish, the best UK cyclist?

In some ways, athletes could benefit from taking performance enhancing substances that sharpen up their mental accuity, in order to cope with the reduced reaction times that are necessary when moving at the kind of speeds afforded by lightweight super-aero kit.

If such substances existed wouldn't taking them make you too smart to take them?

Research suggested that as far as smart drugs are concerned, you'd be hard pushed to beat glucose, caffeine, and nicotine, as they all aid concentration/focus/attention, which is the foundation for 'efficient' cognition.

You can never be too smart. Even if it gets you in trouble.