Morning sickness combines nausea, anxiety, and nervous system activation. Breathing exercises work by calming the nervous system, reducing the sensation of nausea, and restoring equilibrium. Physiological sigh breathing is particularly effective for pregnancy-related nausea.
The physiological sigh (double inhale, extended exhale) provides rapid nervous system reset without the extended holds that might feel uncomfortable during pregnancy. Within minutes of proper sigh breathing, most pregnant people report reduced nausea and restored calm.
Regular sigh breathing practice throughout the day helps prevent nausea escalation rather than just managing it after it starts. Many pregnant people find that consistent breathing practice significantly reduces overall morning sickness severity.