Tamara Hall, I agree frequencies can be either healing or destructive depending on the specific hertz. This includes sound frequencies within sound, music, vibration. Sound waves can heal. You're talking about light waves. So, I didn't know about the Terahertz Wand. But I know a little bit of sunshine can help people but also that some of the sun rays can perhaps be damaging. So, it comes down to getting the best sound and light waves, frequencies, levels. I had over 4,000 followers on Twitter. I now have closer to 2,000 followers. Before you know it, I will probably have no followers, Elon Musk.