Every 90 seconds for 36 minutes at consistent pace (4 sets):
Station 1 – bike for calories
Station 2 – 60 s of double unders
Station 3 – 20 KB swings 24/16 kg
Station 4 – ski for calories
Station 5 – 4 x 7,5 m med ball bear hug walking lunges
Station 6 – rest