Heat places additional demands on the autonomic nervous system—the system responsible for regulating heart rate, blood pressure, temperature, circulation, and other automatic body functions. For individuals with dysautonomia, these systems may already be struggling to adapt efficiently.

During hot weather, blood vessels naturally dilate to help cool the body. This can worsen blood pooling and make it harder to maintain stable circulation, especially when standing for long periods.

Unfortunately, many people with POTS or hypermobility conditions are told they simply need to “exercise more” or “push through it.” While movement can be important, nervous system regulation often requires a much more nuanced approach.