All,
Just took a 5-minute look at this and it looks pretty legit to me.
1) Tons of press and has been around for years.
https://www.healthywage.com/info/is-healthywage-a-scam/
2) The core model is a 3-month 5-person contest that costs $25 per person per month. So that's $375/team. They get up to hundreds of teams per contest. Each contest pays out $10k, $5k, and $3k prizes for $18k total. 48 teams to break even on a contest.
3) The other component of their business is offering odds on people losing at least 10% of their bodyweight over some period of months. You can sign up and see how much they offer you based on your weight loss goals. Based on what they offered me, I bet they make quite a bit of money on this.
4) Then, on top of that, they make money from ads, referrals, etc - huge amount of money in the ************ industry.