To gain mental toughness from harsh surroundings.
The phrase Iron from Ice is a play on other similar phrases – forged in fire, iron sharpens iron and so forth.
The concept is simple – put yourself in a place of adversity to build mental toughness. Place yourself in the harshness and physical discomfort of ice to become iron. In this workout we’re putting you into a place of discomfort by mixing cardio with weighted movements coupled with little to no rest to keep you feeling uneasy.
If you aren’t struggling with breathing – go faster. Or heavier. Or both.