The NSGA is a not-for-profit organization promoting adults to lead a healthy lifestyle through sport. The Summer National Senior Games and the Winter National Senior Games host over 13,000 athletes and 25,000 guests. Economic impact estimates represent over 35,000 room nights for a $35 million dollar economic impact to the host communities. The Summer National Senior Games presented by Humana is the largest multisport event in the world for athletes over the age of 50. The Summer Games is held every 2 years at the chosen host city. Past cities include Louisville, Palo Alto, Houston. Future sites include Cleveland and Minneapolis.