Shoveling (strength) 20:00 
Shoveling 16" of snow to make a path to the garage (about 20' away), then neatening up after using snow thrower.
Strength 2:00:00 
Running the snowthrower to clear the drive (or at least half of it) plus part of the neighbors' (they're around 80 and their machine wasn't working; their daughter won't be there until after work to help them clear the rest)--I cleared out the plowed stuff at the driveway end, and cleared a path from the road to near their house. I did have to manhandle it a few times (like when it ran out of gas...), plus keep my left hand clamped to make it move.
I'm gonna be feeling this tomorrow, and maybe for the next several days! All upper-body, though, so it shouldn't slow me down this weekend. A little bit in the upper back (from the shoveling), front of shoulders, biceps, and the grasping muscles near the thumb were what got used the most.