하허 on Instagram: "This video captures a moment that can be explained through basic biomechanics and physics, particularly how the human body handles lifting and balance. When one person lifts another, the primary muscles involved are the legs, core, shoulders, and arms, with the legs and core doing most of the work to stabilize the spine and prevent injury. The lifter instinctively bends slightly and brings the other person close to their body, which reduces torque on the lower back and makes th