Why more than 3 days/wk? If your training for the crossfit games, Maybe. Weight loss or health and thats too much IMHO. Whatever the reason, I would up the carbs on heavy days, Maybe up the protein a bit, lots of water, hot bath (not ice! check out mobilityWOD's video) Other than that, if your training 5 days a week get used to being and training sore at least till you adapt to that workload.