The Harvard Study of Adult Development has tracked more than 2,000 people since 1938 and has determined the most important factors that predict happiness.
Heart rate variability (HRV) is one of the five new "vital signs" - strong predictors of vitality and longevity. Here are four tips to give your HRV a boost.
Science keeps demonstrating the health risks of a sedentary lifestyle. Add to the list of negative effects the shrinking of a key brain region involved with memory.