Quadriceps, Glutes
Calves, Hamstrings, Shoulders, Core
Attach harness/belt to sled, position sled behind you.
Assume bear crawl position: hands under shoulders, knees under hips, back flat, knees slightly off ground.
Engage core.
Crawl forward by moving opposite hand and foot simultaneously.
Focus on driving with legs to pull sled.
Maintain low hip position and flat back.
Continue for desired distance.