Stroke Rate Pyramid 
10-minute intervals with 2 minutes rest between
First Interval: change the rate each minute
r18-20-22-24-26-28-30-26-22-18
Second Interval: first minute light, second minute with pressure
r20-24-28-26-22

This was the fourth workout in Skeleton Challenge C2 podcast. Woke up with sore legs and kept the pacing on the moderate side, especially during the first interval.