Give your brain a mental exercise to do. A Southern Illinois University study found giving insomniacs moderately difficult mental-arithmetic problems at bedtime made them fall asleep faster.
Yenzisa ubuchopho bakho isivivinyo sengqondo. Ucwaningo olwenziwa e-Southern Illinois University luthole ukuthi ukunikeza abantu abaqwashayo izinkinga zezibalo ezinzima ngokusesilinganisweni ukuthi bazenze ngekhanda ngesikhathi sokulala kwabenza balala ngokushesha.