The qi of the seasons describes how everything on our planet functions, you, me, the trees, the insects, everything revolves around nature and the seasons. When they say to follow the laws of nature it is not some empty phrase. What it means is the qi in your body should match the qi of the environment for your body to be truly balanced. So for example, during spring time is when energy comes out from the kidneys or from "winter". Summer is when energy reaches its peak and that's why it is the season of abundance. Fall represents energy coming out, but then returning back inside to be stored for the winter. Winter represents the deepest level that your body qi can go. It is here where your energy recharges and you rest and prepare for the next rotation of the seasons. Look at how the plants sprout up as there qi reaches for the sun, during summer they usually reach their peak and begin to bear fruit, during winter that fruit gets even riper before it falls down onto the earth, and during winter those seeds go into the ground and prepare to sprout again during spring. This philosophy can be applied yearly, and even daily. For example, when you wake up in the morning and the sun is rising, that is yang qi rising along the sky and you wake up and stretch, thats you drawing your body's yang qi out from hibernation. I feel like this is becoming long winded so I will stop here.