Human guinea pigs prepare for 20-hour marathon flights

Demand for jet-lag therapies is growing at about 6% each year and the industry will be worth $732 million in 2023.

from Hindustan Times - lifestyle https://www.hindustantimes.com/travel/human-guinea-pigs-prepare-for-20-hour-marathon-flights/story-FmLdvLQfMAEdLbvuUdc6hM.html>