Women are biologically more stronger than men and hence tend to outlive their male counterparts, finds a study challenging the per-conceived notion that the female sex is weaker. The findings showed that women do not just outlive men in normal times, but they are also more likely to survive even in the worst of circumstances such as famines and epidemics. Women's increased life expectancy is because they tend to have a survival advantage in infancy rather than adulthood. In times of adversity, newborn girls are more likely to survive than newborn boys.