Originally Posted by
FLvector
It's not good to ride with your elbows locked. Your elbows act as shock absorbers, so a little bend will help to cushion your upper body, your shoulders, neck and back muscles, etc. You don't need to do exaggerate the bend, but avoiding the locked position will help with comfort on a long ride.
What you do is lock your elbows (maybe straighten your arms is a better description) and let your torso sag in between your shoulder blades. It's hard to explain. But man it feels great.