There are various ways to do it; the simplest is to set an IF target and adjust the overall workout percentage, which also changes the recovery sections. If I leave the recovery intervals unchanged, it would probably raise the IF by 1-2%. My underlying question is, “What constitutes a respectable effort,” and it seems like using overall IF as a gauge rather than percentage makes sense in trying to answer that question. 75% of Nine Hammers produces a higher IF than 75% of The Way Out.