Yes, members of 24 Hour Fitness can upgrade their membership plans. The process typically involves evaluating the available options, such as different membership types or packages that may offer additional benefits, classes, or access to more facilities. Members may be able to make these changes online through their member account or by visiting their local 24 Hour Fitness club. It is advisable to check the website or visit the specific club for the most accurate and current information regarding available membership options and pricing. Additionally, keep in mind that promotional offers or specific membership upgrades might vary based on location. If there are specific questions about the upgrade process, referring to the section dedicated to memberships on the 24 Hour Fitness website may provide further clarity.