The answer here depends on the reasons for receiving the massage. If a client comes for some injury relief, and to relieve chronic tightness that is interfering with their daily lives in some way, weekly sessions may be necessary for a while to build on each session’s improvement in their relief and healing. For those who use massage as preventive care and managing the daily stress in their lives, once a month is about the norm. They may shorten the time between massages during stressful periods. Some come more often just because they enjoy it that much.
For most people, the frequency of the massages they receive is limited by their pocketbook. It’s an unfortunate fact, but once many people realize the benefits it provides them, and the pleasure they receive from it, they find a way to incorporate a regular session into their budget.