Why do I get sleepy before takeoff?

Pre-Flight Fatigue: Understanding the Science Behind the Drowsiness

As you board an airplane, an unexpected wave of drowsiness may wash over you. This pre-flight lull is a common experience, and understanding its cause can help alleviate any discomfort or concerns.

Physiological Response to Stress

Before takeoff, our bodies experience a surge of stress as we adjust to unfamiliar surroundings and heightened safety measures. The release of stress hormones such as cortisol and adrenaline prepares us for the upcoming journey.

Hormonal Shift

Once the plane stabilizes and gains altitude, our stress response begins to subside. The body’s natural relaxation hormones, such as serotonin and melatonin, come into play. Serotonin promotes a sense of calm and well-being, while melatonin is associated with sleep regulation.

Contribution to Airborne Fatigue

This physiological shift creates a conducive environment for sleepiness. The decreased stress levels and increased presence of relaxation hormones can trigger a feeling of drowsiness. This is further exacerbated by the monotonous hum of the engines and the darkness of the cabin, which can mimic nighttime conditions.

Other Factors

Aside from the hormonal shifts, other factors can also contribute to pre-flight fatigue:

• Sleep deprivation: Lack of adequate sleep before a flight can make you more susceptible to drowsiness.
• Alcohol consumption: Alcohol has a sedative effect and can amplify sleepiness.
• Medication: Certain medications, such as antidepressants or anti-anxiety drugs, can cause drowsiness.

Tips for Combating Pre-Flight Fatigue

To combat pre-flight fatigue, consider the following strategies:

• Get enough sleep: Aim for 7-9 hours of quality sleep the night before your flight.
• Avoid alcohol: Limit or avoid alcohol consumption before boarding.
• Stay hydrated: Drink plenty of water to prevent dehydration, which can worsen fatigue.
• Move around: If possible, stand up and walk around the cabin periodically to keep your blood flowing.
• Listen to upbeat music: Listening to stimulating music can help keep you awake.
• Engage in light reading: Reading a book or magazine can distract you from drowsiness.

Conclusion

The pre-flight lull is a common experience caused by a physiological shift towards relaxation. Understanding this process can help us effectively manage pre-flight fatigue and enjoy a more comfortable and restful journey. By following these tips, you can minimize drowsiness and make the most of your airborne experience.