Trees Provide Habitat for Wildlife. It is only natural that wherever trees are planted, wildlife and other plants are sure to follow. Trees provide shelter and food for a variety of birds and small animals, such as squirrels and beavers.
The only real medical reason you could be unusually tired during your period is if you have anemia, which is an iron deficiency. For some women who are anemic and have a very heavy period, the first day can be a doozy. However, this group is in the minority.
Getting a pregnancy test would be the first thing to do to make sure. However, there can be other reasons why your period is late. Stress and anxiety can cause delayed ovulation which in turn would make your period later than usual. Losing or gaining a significant amount of weight can also cause you to miss a period. Also, make sure that you counted your cycle correctly. The first day of bleeding is the first day of your cycle.