Healthy Competition.co.nz holds weight loss competitions designed to help motivate people to lose weight. Players simply sign up free then have access to biggest loser style competitions which last 4 weeks. Each player buys in and the top two players with the highest percentage of weight loss split the winnings with 75% going to first place and 25% to second.
Its an interactive community where players are able to support and communicate with each other on their weight loss journeys. Of course theres room for a bit of friendly banter to make things interesting as well.