Just found this fantastic forum and feel sure you all have the answer to my question. I have been riding my bike (mtb with on/off road tires) twice a day for two weeks. About 20 minute rides around the neighborhood to prepare for longer rides. I am enjoying it so much, but my legs burn almost every day. What can I do (eat, drink, or take) to help with that? So refreshing to find such a nice, clean, informative forum. Keep up the good work! Betsy.