Okay kiddo, so there is a type of yoga called sanyasa yoga. Sanyasa means "renunciation" or giving up something to focus on something else. And yoga means "union" or coming together.
Sanyasa yoga is when someone gives up normal life things like having a job, a family, and lots of stuff, and instead focuses only on being close to God or the universe. They do this by meditating, praying, and doing other things that help them feel connected to something bigger than themselves.
Think of it like when you really want to watch your favorite show, but your mom asks you to clean your room first. You have to give up the fun thing you want to do for a little bit, but then you feel really happy and proud when your room is clean and you can watch your show.
So with sanyasa yoga, people give up some fun things in life to focus on feeling connected to God or the universe. And just like when you clean your room and feel really good, people who practice sanyasa yoga feel really happy and peaceful when they focus on spirituality instead of things like having a lot of stuff or a big job.