The frequency of stretch therapy sessions can vary depending on individual needs, goals, and activity levels. However, a general guideline is:

1. For general flexibility and well-being: 1-2 times per week can be sufficient for maintaining flexibility and preventing stiffness.
2. For athletes or those with specific mobility goals: 2-3 times per week may be more beneficial to improve performance and prevent injuries.
3. For injury recovery or rehabilitation: Stretch therapy might be recommended more frequently, potentially 3-5 times per week, under the guidance of a healthcare professional.

It’s important to listen to your body and adjust the frequency based on how you feel and your specific needs. Regular sessions can be helpful, but overdoing it can lead to overstretching or strain.