Maybe we cannot blame late-night TV, endless Internet surfing, midnight snacks, good books, bothersome work deadlines and other distractions of modern life for encroaching on our sleep.
Research unveiled on Thursday showed that people in isolated and technologically primitive African and South American cultures get no more slumber than the rest of us.
Scientists tracked 94 adults from the Tsimane people of Bolivia, Hadza people of Tanzania and San people of Namibia for a combined 1,165 days in the first study on the sleep patterns of people in primitive foraging and hunting cultures.