Pods are produced by plants to help with the delivery of the seeds and to encourage the transportation of the seed away from the parent plant. With many fruits and vegetables, the seed pods are edible and the seed is disbursed in this fashion.
Studies have found that in general, the optimal temperature for sleep is quite cool, around 60 to 68 degrees Fahrenheit. Temperatures that fall too far below or above this range can lead to restlessness. Temperatures in this range help facilitate the decrease in core body temperature that in turn initiates sleepiness.
when you go to sleep your set point for body temperature the temperature your brain is trying to achieve goes down says h craig heller phd professor of biology at stanford university who wrote a chapter on temperature and sleep for a medical textbook