Feedback needed for app that finds you people to share personal training with

Hi Guys
Hoping to get your feedback on a new app I am building where people can find a shared personal training session for 2-3 people (without having to bring their own people) so doing some market research at the moment. Is this something that could be of use to you?
The idea is that personal training is great but way too expensive so by sharing a trainer you can get the benefits of PT but at half or a third of the cost.
What do you think?
Any feedback would be greatly appreciated.
Thanks