These usually fade after a week, but it may take months to regain a sense of natural well-being.

BBC: Factfile on drugs

Still, the upbeat domestic sales figures for the first month of the new business year are likely to fan optimism that Japanese car makers will continue to regain sales momentum after the disruptions caused by last year's Asian natural disasters, which also included flooding in Thailand.

WSJ: Japanese Auto Sales Climb 92%

Meanwhile, cooler-headed Greeks are racking their brains for ways to regain the economy's lost competitiveness and make better use of Greece's abundant human and natural assets.

ECONOMIST: The Greek crisis