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.
It is not uncommon for a woman to have a variety of secondary symptoms that accompany her period. From a slight headache during menstruation to lower abdominal cramping to nausea and even vomiting, every woman experiences her menstrual cycle in a different way. In terms of nausea, there are some very specific things that can cause nausea when a woman is on her period.