The human body reflects nature's rhythms. Most people tend to be more active during the day and more sedentary during the night. Our biological blueprint leans this way. It follows that our practice should try to honor these natural rhythms as well. The word HATHA consists of two aspects: HA, meaning Sun and THA, meaning moon. We have periods in the day where we tend to operate more mentally and periods when we tend to operate more physically. Mental functions are associated with the moon while physical and vital functions [...]