For quality @zone 2 Workout

4:30 on - 0:30 off x8, alternate between a & b:
a) machine
b) AMRAP:
2x8-12 (goblet) lateral box step up
5-10 T2B
2x-6-8 kb/plate windmill
2x8-12 double db see-saw row

Target: HR 60-70% of max (zone 2). This is RPE 6-7 for lungs, but movements themselves can be challenging. Hence keep long enough breaks between movements in order to maintain wanted intensity.