How do you determine if your group fitness classes included in a membership are successful? ADVERTISEMENT 344 viewsMarch 29, 2017 0 Jocelyn March 29, 2017 0 Comments I have heard that a 10% penetration rate of total gym visits is considered good. Can anyone confirm that? 3 Answers ActiveVotedNewestOldest 0 NatalieSmith5 Posted 0 Comments Hello Jocelyn Ritti, Ten percent penetration rate is good; fifteen percent is the average. I hope this helps you. Thank you, Natalie aka NAPS 2 B Fit. You are viewing 1 out of 3 answers, click here to view all answers. Register or Login