1. The obvious solution to combat sleepiness is to get more rest at night. 克服困倦显而易见的解决之道根本就是保证夜间的睡眠。
2. Melatonin can also increase sleepiness during the day, when the pineal gland is not producing it. 褪黑激素也可以让人在白天产生睡意，在白天时松果体不生产褪黑激素。
3. Temperatures in this range, it seems, help facilitate the decrease in core body temperature that in turn initiates sleepiness. 温度处于这个范围内，似乎利于中心体温的降低，而中心体温降低反过来利于睡眠。
