I had shoulder and back stiffness plus headache that is on and off for the past two weeks. I went to urgent care two times and I was told it was tension headache. I was told to take tylenol or Ibuprofen but did not help. So I tried Ling Ling Massage because another reviewer gave it 5 stars. After few days, my shoulder / neck stiffness and headache disappeared. It really help a lot. I will definitely recommend.