We have been so lucky here in the Denver area this Autumn - not much snow to speak of! If you are the one who ends up shoveling, you may want to prepare your body for that inevitable blizzard. This is where core training is valuable. It teaches you how to support your back with better posture and body awareness. I suggest practicing the "dead bug" exercise which may be done on a mat or carpet. On your back, have knees bent at 90 degrees, with the feet off the floor. Arms are bent, with the elbows pointed towards the ceiling. As you bring one foot back to the floor (knee is still bent) bring the opposite arm over your head briefly touching the hand to the floor. The important part is to keep your lower abdomen still without arching your back off the floor. Pictures and complete progression are at: http://www.acefitness.org/exerciselibrary/147/supine-dead-bug
Once you know how to stabilize your back and abdomen, you will be able to accomplish this while doing heavy lifting, such as lifting dozens of shovelfuls of snow!