Paying attention to natural cycles can pay off with better well-being. From prehistoric times, human beings have been aware of the seasons. With the development of agriculture, people paid close attention to the seasonal changes, planting and harvesting according to these annual changes. Other creatures are tuned into similar cycles of their own.
Many insects increase in numbers with the availability of food.
When farmers pay close attention to such cycling, they can make better use of pesticides by spraying only when they will be most effective. This minimizing of pesticide application is economically and environmentally desirable. Human beings also can benefit from paying attention to their own daily rhythms. Doctors have noted that chemotherapy may sometimes be more effective when administered at certain times of the day. They also use the natural variation of internal hormone levels as a diagnostic tool for some diseases.