First time Relax Sauna compares to other FIR saunas

After sitting in the sauna for about seven minutes, she says that she feels so good, like she had just gotten a big hug from the sun.  She says that she feels very happy and so positive right now.  She had been feeling very cold when she first got in, like the cold had permeated all the way to her bones and now she feels like she would like to take a nap.  She had been in wooden far infrared saunas before and says that sometimes she only felt the heat hot on her back or on her feet, depending on where the heaters are. She likes this better because it is more all enveloping and totally even all over and it heated up almost instantly.  She wonders why she had never heard of these before.