If a gym membership is too expensive for you to pay each month, then start playing sports to get your exercise. Sports are a great way to stay in shape when you do not have a budget for the gym. Plus you get a great workout while having fun. Play sports for thirty minutes at least two times per week to keep your body in shape.
Volleyball is a great sport to play with friends. You can make the workout harder or easier depending on where you play.
There is many benefits to playing sports rather than going to the gym. Saving money and having fun while doing so is a start.