  Considering today's lifestyle, people just sleep forgetting the benefits it
provides to the human body. The reasons for not having a productive sleep could
be many. Smart-Yoga Pillow (SaYoPillow) is envisioned as a device that may help
in recognizing the importance of a good quality sleep to alleviate stress while
establishing a measurable relationship between stress and sleeping habits. A
system that analyzes the sleeping habits by continuously monitoring the
physiological changes that occur during rapid eye movement (REM) and non-rapid
eye movement (NREM) stages of sleep is proposed in the current work. In
addition to the physiological parameter changes, factors such as sleep
duration, snoring range, eye movement, and limb movements are also monitored.
The SaYoPillow system is processed at the edge level with the storage being at
the cloud. Not having to compromise the user's privacy, SaYoPillow proposes
secure data transmission for both uploading and retrieving, and secure storage
and communications as an attempt to reduce malicious attacks on healthcare. A
user interface is provided for the user to control data accessibility and
visibility. SaYoPillow has 96% accuracy which is close to other existing
research works. However, SaYoPillow is the only work with security features as
well as only work that considers sleeping habits for stress.
