
As the song from the musical Les Miserables, based on the novel by Victor Hugo, says, “But the tigers come at night, with their voices soft as thunder”. We’ve all been miserable at night, when we find ourselves tossing and turning in bed, staring at the ceiling because of an unbearable backache; or toothache, or earache, or kneeache.
It was there during the day, but now it won’t let us rest and gnaws at us. The question is: why do we feel the pain more intensely at night? What does science have to say about it?