I notice that when I take long rides, I develope inner thigh leg cramps later in the evening long after I have finished riding for the day. Upon doing a little research, I found out that this can be a common problem among bikers. One suggestion was to drink Gatorade as evaporation can cause a depletion of electrolytes thus causing the muscles to cramp up. So, on my last trip, I downed two bottles of the lemon-lime Gatorade and I did not have one cramp at all. Conclusion? My cramps were caused by dehydration and loss of electrolyte balance. I will always carry Gatorade when I travel on the bike from now on.