I ran the fitness dept. at a very large community center back in the 90's. About '95 or so we computerized and I was able to "track" visits and memberships.
I took an interest in seeing the "mortality" rate of new members after January 1st one year.
If I remember correctly, by the end of January, roughly 40% had quit coming, and by the end of March, it had crept to over 65%. By June you could drive a semi through the room
