Row a pyramid of hard pedal revs from one to 15 with three light revs between each set. So it will be: one rev hard followed by three light. Then two revs hard followed by three light. Three hard, three light. 4/3. 5/3. 6/3 through to 15 hard, 3 light and then back down. 14/3. 13/3 and so on to 1/3.
PM5: Just start rowing or press A once