Quote Originally Posted by Ana View Post
Another thought just occurred to me: could it be that I'm getting too much impact on my hands/arms/shoulders which induces headaches? I've ridden on my trainer for long periods of time during the winter but never had the headache problem.
...

I wonder if I should see a bicycle fitter or a doctor first
Bike fitter or PT with bike fit experience, to figure out why you lock your elbows when you ride. (I doubt it's the aluminum's fault)