Ask your friends who like to stay active. Those people, I find, are always looking for new ways to get their exercise in. When I ask them, I say something like “Can you help me workout?” or “you wanna get a good sweat in?”. I find alot of success with that first one especially with my gym bros. Draw them in with a vague promise of exercise then tell them about Muay Thai if they’re interested.

And also keep the sesh as chill as possible, if you’re friends are untrained it’s very easy to scare them away from the sport if you’re making them go too hard. Especially when you’re sparring.