I am new to road cycling and have been in training for a 70 mile ride at the end of August. But I think I have hit a raod block. After any training ride my legs feel as though they are dead, stiff and weak. I train 5-6 days a week usually keeping the majority of the training rides at a good pace of 16-17 mph and a distance of 20 miles. The weekends are the long rides usually 40-50 miles at a 13-15 mph pace. Any ideas of how I can fix this or am I overtraining. I also know that my diet is in horrible shape and it needs some work.