We bought the two person Heavenly Heat Sauna because we wanted the benefits of Infrared heat and the red light therapy as well. My son had a heart attack 13 years ago at age 48 and had stents at that time. In September, 2021, he had open heart surgery. It was "successful"; but, he's had heart pain all these years! I was hoping this sauna would prove to be good for his heart and his wife and me and my friend, too. It's taken several months, but, he recently told me he's feeling the improvement in his heart! He looks healthier, too! After all these years of prayers and worry, it's such a blessing to finally know he's doing better. I'm 84 years old and my friend and I use it together at 115 degrees for 30 minutes nearly every day. It took me a couple of weeks to have my body learn to sweat! I grew up in a world that told me women shouldn't sweat - so, I didn't! Now, I do and find I'm I feel better for it. My stepdaughter visited recently and she used our machine as often as she could. She loved it! And, said they were going to order a unit this week because she was missing the benefits she felt. The benefit of infrared heat and red light therapy is so very special. Thank you!