Your body knows it is winter even if it is not cold and snowy outside. Winter - indeed all seasons - bring changes in the length of the day, quality of daylight, temperature of the earth and water bodies, blooming cycles, and animal behavior patterns. Our bodies are attuned to these natural signals. You are probably feeling the need to sleep longer, eat more warming foods, move a little more slowly. These are all signs the body is acclimating to winter and trying to go inward to store vital resources. This going inward also means that we have less external defenses (think immune system help) to protect us from colds, flus, and other ailments that surge during winter. This is where moxibustion can be a powerful healing tool.