Jack Daniels seems to use H(ard) and I(nterval) interchangeably in his book. Would I be right in saying that the pace of his H and I runs are the same, but I runs are distance repeats, whereas H is based on time?
Everything else is described in fool-proof detail, but H pace is mentioned occasionally and not in the pace tables. Can anyone confirm or clarify what he means when he says to run H pace?