We've been combing through Fitbit's recent IPO filings. They share some interesting data on the state of the health and fitness market as a whole as well as the rapidly increasing demand for wearables. It's a fast growing market as evidenced by this quote from their S-1.
Based on information from industry sources, we estimate consumers spent over $200 billion in 2014 on health and fitness services, such as gym and health club memberships, commercial weight management services, and consumer health products, such as weight management products and dietary supplements. In addition, IBISWorld estimates that the corporate wellness industry will grow from $7.4 billion in 2014 to $10.4 billion in 2018 in the United States.