A will be the answer because usually marking your exercise days will become a habit because lets say you would do a running exercise but you want to do it in a certain day well if you mark it on the calendar, it'll become a habit.
Answer:
you picked the right one good job
Enviromental because it has to do with pollution.
Coupon Book: A coupon book is a book full of "coupons" homemade by you. You make "coupons" personally made for them, that they may like. Examples, "I will do your laundry for a weekr", "let you borrow any clothes for my closet", or "Choose what you want for breakfast and I will make it". I would make this for one of my siblings. Hope This Helps!
When our bodies get warmed up Blood Flow increases to the muscles that need it.
