Reaching the 12-mile mark today was a massive personal achievement and securing the number one position in my fitness league made the effort worthwhile.  Spending hours moving outside in almost-perfect weather allowed me to relax.  While we frequently think of fitness as a hard effort, combining the movement with sunshine is a highly effective way to boost serotonin and general mood.  It is difficult to balance competitive goals with emotional well-being at all times.  Winning in the league felt the best and relaxation felt even better.