I just read the article about never working out more than two days in a row but never resting two days in a row. I hope one of those days can be body weight exercises at home. I like mixing and matching yoga, martial arts, and body weight exercises at least one day a week between lifting sessions.
Working Out Four Days a Week
Well on the off days you can do “non traumatic” activites. Stuff that do not leave you with the need to recover.