If your only plan is just that people earn points by exercising, and they can spend the points in the shop/marketplace, that's not something you can market to Epic. That's a type of reverse monetization where you lose money every time someone moves in real life and is borderline insane. Why does Epic care if you exercise? I promise you they don't care. What should your sales pitch be? How this is going to drive more sales to the Epic store. Epic is losing money right now, and they aren't just going to pay everyone who logs into their site to exercise because it's a nice thing to do. You need to go into detail about how you are going to extract more money from the user than you have to pay them for their points. If Epic doesn't see a clear path to riches, they won't even begin to consider this.
Epic is not a healthcare company. They don't make exercise equipment. They aren't a gym franchisee. Are you going to be attracting the right people? Let's be clear, you aren't proposing an app. You are proposing a marketing campaign, and who this campaign would attract is of vital importance. Epic already has a colossally poor conversion rate. I fail to see how this is going to help. You need to make sure Epic does see the benefit.
And by the way, I worked in management and in consulting for many years with First Horizon, BB&T, Citibank, Answer Financial and SBS. I'm not living in my mother's basement.
Also, I have to assume you've done your research and realize that they already have a points program. They aren't going to start a second one. You will need to integrate this into the points program that they already have. The problem is that their current plan is much more financially viable as they only give you points when you make a purchase. You're asking them to give additional points for things like wandering around your house trying to figure out where you left your keys. That's a tough sell. (I suggest that people need to be going at least 4 mph to start accumulating points)
I'm not trying to discourage you. I'm trying to tell you what you are up against so you can be prepared. Good luck.