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.
Here are the 10 most common reasons that you missed your period: Stress. Stress can affect many things in our lives, including our periods. Sometimes we're so stressed out that our body decreases the amount of a hormone (GnRH), which causes us to not ovulate or menstruate.