Low T is not an illness, it is a symptom of aging and overtraining. Once your race is over ease up the training and watch your levels rise again. It's not like taking warfarin for a heart condition, it isn't essential. In fact, as we age we produce less T and women less oestrogen, it is what our bodies are meant to do, the symptoms we may not like, but they are natural, adding hormones could be a reason why we have so many other diseases now. Don't f... with nature.