Yes, this is a bargain because two cans would usually cost $1.38, but the deal gives you two cans for $1.29 which is 9¢ less.
Menstruation is the process in which the uterus sheds blood and tissue through the vagina. This is natural and healthy in girls and women of reproductive age. Western communities call this a period.
You should lift lighter weight with far more repetitions I would think.