Since its founding, the Y has provided health and fitness programs as an integral part of its mission. Today, YMCAs are the nation’s largest providers of health and wellness programs. We welcome individuals from every walk of life.In an unprecedented national mobilization effort, YMCAs are also working hard to combat rising levels of obesity and promote healthy living for millions of Americans through YMCA Activate America, an extensive, research-based partnership initiative to overcome the nation’s growing lifestyle health challenge.