I realized that this is the way Ayurveda relates to life as well, and that it continuously reminds us to live according to these cycles. Since it considers the macrocosm and the microcosm to be the same, only in a different manifestation, it is clear that nature's cycles also are found in how our bodies function. Ofcourse Ayurveda relates to this in the language of vata, pitta and kapha, and we see these energies cycling through the day, the seasons and life in general.
For example the window of time between 10 and 2 is considered pitta time. Since pitta mostly represents the element of fire, this window of time during the day is a good time to eat. The fire in the belly is strong at this time. At night this is the time when people get their second wind when they stay up late. Suddenly there is a lot of focus, and energy to get things done, again a way that fire manifests itself - in the mind this time. The recommendation is to go to bed before this time, so that you don't get caught in a second wind. What really needs to happen during these nightly hours is for the liver to go through its cycle of detoxing the blood. Staying up late and putting in mental and physical energy, takes away from this important physiological task. So here we go again, nature's cycles... we should go to bed when nature goes to bed. A little later in the summer, a little earlier in winter. And it's okay to sleep a little more in winter, it's dark out!
Winter, at least the beginning of this season, is vata season. Vata represents the element of air, or wind, which is always moving, is cold, and dries things out. This is the time of year when we feel cold and easily dehydrated. We deal with emotions like fear and anxiety. So the best thing to do is to take real good care of yourself through eating a very nourishing diet, by getting enough sleep, by oiling your skin, by slowing down in general. Each season has its own characteristics, and dosha, and because of that a different way in which to treat ourselves.
The doshas also show up in the time of life. For example childhood, up until puberty, is kapha time of life. Kapha has the energies of earth and water. And when we bring these two together there is growth. Seeds sprouting into plants and blooming into beautiful flowers. This is children's job, growing up and flowering into beautiful mature people. They need lots of water and earth, in the form of nourishing food and loving care, to do this.
To go back to where I started... Ayurveda reminds us to live in cyclical time, not chronological time. We move through vata, pitta and kapha cycles all the time. Reminding ourselves of this reality, makes us take care of ourselves differently. Honoring the cycles of life and death and life again, keeps us young and healthy and always rejuvenating our body and mind.