Greatist.com | The 45 Most Innovative Health and Fitness Startups.

Find a friend to play Frisbee at 4 p.m. Friday. Plan to learn Portuguese, and do it. Get the info on an influenza outbreak. Startup companies are constantly coming up with ways to make health and happiness easier to achieve. Check out our list of the 45 most innovative, most epic, and all-around killer startups.