sometimes I start getting a headache due to looking "up" from a semi tucked position for too long. when I start to feel it coming on I just relax my eyeball muscles alittle and look to the side or down at my front wheel instead of 60 yards in front of me.
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2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
2000 litespeed Unicoi Ti, XTR,XT, Campy crank, time atac, carbon forks