@MarvinFreeman I'm a new runner (about 6 months in), and I have done #EIM from the beginning. I still often do smaller sessions, not the full standard sessions, or I mix things up a bit. (like 3x1km + 5x200m). The method is actually quite flexible and adapts to the number of days per week you want to run. The book has example training plans from 800m to a marathon. It has a 13-week half-marathon training plan in variants from 3 to 8 training sessions per week.