Yes, a lot of them. Non exaustive list: - bone microfractures - nervous system depletion - tendon "microlesions" (not so sure about this term though) - immu

Yes, a lot of them. Non exaustive list: - bone microfractures - nervous system depletion - tendon "microlesions" (not so sure about this term though) - immune system blunting due to stress - raised cortisol levels - (possible) nutritional deficiencies given the increased exertion (or just metabolic bottlenecks)