I have baptised these the B52’s in honor of Casey Clarke sadistic training plan..
Alternate R18/1:58, R22/1:54 with 1:30 rest between intervals.
I found the 1:30 R more than sufficient for the HR to recover to well below 2xHRR (2×46=92) – most of the work was around about TR for me.
RPE for the piece about 7. A fine way to start the morning. I liked this one. opted not to do a 10k cd…