Happiness makes it easier to get pregnant

Do you know why nine months after the World Cup, Germany is experiencing a baby boom? ...You got it right... according to a report, "last summer's mix of sun, beer and excitement during the football World Cup appears to have produced a massive hormone rush in German bedrooms, gardens and back alleys". Happiness tends to release hormones and makes it easier to get pregnant. The current birth rate is 10-15% higher than average, which is good news because Germany's birth rate is among the lowest in the world.