I can't. The component of thin shoulder needle is botulinum toxin, which will affect the conduction between muscles and nerves. Lying flat directly may lead to the spread or loss of Botox, which will affect the effect, so you can't lie flat just after punching the thin shoulder needle. Shoulder-thinning needle, leg-thinning needle and face-thinning needle are all botulinum toxin. By blocking the joint between nerve and muscle, muscle loses its neurotrophic and shrinks, thus achieving the effect of slimming.