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.
A missed period is obviously a sign of successful conception, but even before than happens, a woman may start noticing a few other things. Breasts may become tender and feel fuller or heavier. You may experience nausea or morning sickness.