[BHV] question....

[tom a]

I'm no expert on how muscles work the hows and why's.  Could someone please tell me why that the first 2 miles of my rides ( all rides) my legs will burn to the point of unbearable.  No matter how much I warm up and stretch.  But after the 2 miles, I'm able to ride endlessly without effort hills or flat, in the wind it doesn't matter.  PLease help me with this "burning" question
thanz


      
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