Jo Beth Dow,co-founder and CTO of SweetWater Health
I am always searching for new techniques and technology that will help improve HRV. Our partner and friend, Ben Greenfield of Ben Greenfield Fitness highly recommended the Delta Sleeper and he was posting his morning HRV after using the device. I was intrigued after viewing Ben’s posts and I had to try it for myself.
I started using the Delta Sleeper SR1, a 1.5 ounce device, to determine what affect PEMF had on my heart rate variability. Being an ultra lark I never had difficulty falling asleep but sometimes I had difficulty staying asleep. I would wake up between 3:30 am and 4:30 am and start working. Fortunately, I was getting 7 to 7 1/2 hours of sleep per night. I never fully understood until now what affect my rather unique sleep schedule had on my husband.
The Delta Sleeper SR1 was easy to use and while I was sleeping I wasn’t even aware that I was wearing it. The Delta Sleeper SR1 is a small device that you place on your brachial plexus using a thin adhesive strip. The first night I did not notice any difference. The second night I was restless but woke up feeling unusually good. The third night I had decided not to wear the SR1 and I had a very restless night. I got up in the middle of the night and placed the SR1 on my forehead (this is not recommended application) but I was too groggy to apply the adhesive and place it on my brachial plexus. I slept in until 7:25 am and felt wonderful!
I have continued to use the SR1 every night. Even on the nights that I am not sleeping longer, I feel especially clear, relaxed and focused in the morning. One night I told my husband I wasn’t going to wear the SR1. I wanted to test the quality of my sleep without the product. My husband responded, “You’re not?” I replied, “What, you want me to wear it?” His response was, “I want you to implant it.”
The SR1 has not only helped me sleep longer but as a secondary effect helped my husband sleep better. Even the nights that I don’t sleep longer than my previous norm I feel like I am getting more quality sleep and sleeping deeper. I have two months of HRV data since using the SR1. My morning HRV has increased 9 points and is moving on an upward trend, reached an all time high HRV on several mornings and my afternoon HRV and LF/HF power levels have increased. The numbers are impressive especially since the HRV value is logarithmic.