I have the exact same issue/question and haven't quite officially even met the threshold for this sub-forum. My legs never seem to shake their fatigue. I want to add weight-lifting in to the mix but haven't really figured out how to add it as I'm never actually recovered. Been riding almost every day for 1-2 hours, sometimes road, sometimes dirt. And skip 1-2 days a week. It's hard to do a 'recovery' ride here because everything is hills. But it's frustrating because sometimes I feel too weak to push harder, but also don't want to take any steps back in terms of fitness and weight-loss progress.