While exercising during flights can be beneficial for combating stiffness and promoting blood circulation, there are potential drawbacks or limitations that the author might have overlooked. One major concern is space constraints on airplanes, making it challenging to perform certain exercises without disturbing other passengers or causing inconvenience. Additionally, some exercises may not be suitable for individuals with specific health conditions or mobility issues. Another limitation is the availability of facilities onboard to freshen up after working out, which could be a concern on long-haul flights where shower facilities are not available.