There is no such thing as overtraining for an average recreational rider...Overtraining usually happens to professional athletes who train hard 2 times per day 7 days per week...Are you a vegan ??...If you are then there is your problem. You need to make changes to your diet. The reason you're having all these aches/pains and low energy levels is because your body may not be getting enough nutrients from vegan diet...Majority of people who think that they suffering from overtraining are in fact getting all those negative symptoms from unbalanced diet.