What is an absolute contraindication to exercise during pregnancy?

The absolute contraindication to exercise during pregnancy is restrictive lung disease. This condition can severely limit lung function and oxygen delivery, which are essential for both the mother and the fetus during physical activity. Engaging in exercise can exacerbate respiratory issues and potentially put both the mother and fetus at risk due to inadequate oxygenation.

In contrast, other conditions such as hypertension and severe anemia may require careful management and assessment, but they are not universally prohibitive for exercise. Gestational diabetes can often be well-managed with exercise as part of the treatment plan, provided it is monitored closely. Each of these conditions can vary significantly in severity and management, but restrictive lung disease poses an immediate and serious risk that makes exercise unsafe for pregnant individuals.