Something Sifu Hayward shared in his newsletter

"In the period of the three months of spring is the time of birth and spread. Grasses
and trees are becoming vivid and all living things in the world become flourishing
with a new dynamic atmosphere. Since a human is one of the living things in the
universe, they can by no means be excluded. In order to keep in accordance with the
law of the variation of the seasonal sequence, one should go to bed when the night
comes and get up early in the morning. In the morning, one should breathe the fresh
air while walking in the yard to exercise their tendons and bones and loosen their
hair to make the whole body comfortable along with the generating of spring energy."
                                                           -Yellow Emperor’s Classic