Run/work/run intervals week 3: run under fatigue

For completion as warm-up:
400m row or ski erg or 800m bike erg
:60 alteranting 90/90 sit
12 sub-maximal burpee broad jumps
jog to 2nd pole & back

Every 10:00 for 40:00 (4 sets):
1st: 400m run + 600m row + 400m run
2nd: 400m run + 600m ski erg + 400m run
3rd: 400m run + 100-150′ sled pull + 400m run
4th: 400m run + 40-50 alternating weighted box step-ups + 400m run
+
optional 5th: 800m run

notes:
*intent is continued awareness of run pacing, especially under fatigue on the 2nd 400m each interval
*50′ turnarounds for the sled
*20″ box w/holding wall ball on shoulder for the step-ups
*should have at 2:00-3:00 rest each interval, adjust the in-gym work as needed

optional relaxed mobility work