A study in 2004 looked at whether Reiki could reduce insomnia and improve sleep patterns. It found that Reiki was a beneficial therapy for sleep problems since it decreased episodes of insomnia and improved sleep patterns. Reiki also had a positive effect on the parasympathetic nervous system, which is associated with relaxation.
In Chinese medicine, winter is the time to take care of your adrenal glands. Adrenal glands are found just above your kidneys and help you to respond to stress appropriately. They may be small but they make and release many hormones that circulate through your blood and influence many aspects of your health.