A software developer flies from New York to attend a week-long conference in Berlin. For the first few days, they report feeling unusually sluggish during afternoon sessions, are easily annoyed by minor delays, and struggle to concentrate on technical presentations. Which additional symptom would be most consistent with this pattern resulting from the long-distance travel?

Light Therapy for Circadian Rhythm Disruptions

An executive is flying from New York to Paris for an important meeting. The flight is overnight, and they will land in Paris in the morning. To best counteract the physiological effects of this rapid time zone change, which strategy is most effective because it addresses the core biological cause of the problem?