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.
1 Situational Illness Feelings Some people experience anxiety as a result of various situations. 2  For example, before a test, before a first date, before proposing, etc. 3  Chronic Illness Feelings Long term, chronic anxiety can also cause you to feel sick. 4  This is very often indicative of an anxiety disorder.