I guess that's what first gear is for?
First gear would get its work out going up and your white knuckles would get a work out going down
I know mine sure did but then again living in
FLAT Houston, I don't have much experience going down a mountain at 50+ mph on a 16 pound carbon bike with tires that are 23 mm wide and have a foot print of less then the size of a quarter, and the last thing you want to do is hit the brakes for fear of sliding the rear tire witch will lead to lots of road rash.
And since were on the topic of motorcycles and bicycles... An interesting fact...a bike will out run a motorcycle down a mountain.