1, the neck is naturally straight, and the eyes are looking ahead and below. Don't stoop, hold your chest out, and keep your head, shoulders, hips and lower limbs in the same plane.
2, the muscles of the waist and abdomen and the muscles of the pelvic floor should be tightened, so that the back spine is in a natural shape, and the curved shape can also be used. Breathe naturally, don't hold your breath.
3. Don't tilt your ass up and down, and don't tilt your sides. The palms are in a natural state, palms down, or fists clenched with both hands.
4. The lumbar spine should be as straight as possible, the pelvis should be neutral, and the abdominal muscles should contract to bear the load.
Precautions:
From the perspective of anatomy and biomechanics, people pay more and more attention to upright and running, the two most instinctive body structure postures. From the evolutionary and neurological point of view, various head and posture reflex mechanisms left over from infancy will directly change other body postures.