Chest, Shoulders
Calves, Glutes, Hamstrings, Quadriceps, Triceps
Attach dual handles/straps to sled.
Stand facing away from sled, holding handles at chest/shoulder height.
Lean forward, arms bent.
Drive with legs to walk/run forward, dragging sled.
Simultaneously press handles forward, extending arms (like chest press).
Bring handles back to chest as you step.
Coordinate stepping and pressing. Continue for distance.