Planet Fitness is a gym chain known for its affordable monthly fee of $10. Customers praise the bright and open atmosphere of the gyms, often noting the abundance of windows. Many reviewers highlight the cleanliness of the facilities and the friendly staff, who are consistently helpful and professional. Some locations are situated in desirable areas, though parking availability can be limited at certain gyms. The gyms are often filled with polite and friendly people working out, creating a positive environment. Mondays tend to be the busiest day, so visitors are advised to avoid that day if possible. Overall, Planet Fitness offers good value and a welcoming atmosphere, making it a popular choice for many.