A miniature actigraph worn over the wrist (Mini Motionlogger, Ambulatory Monitoring, Inc. Ardsley, NY) was applied To guage sleep good quality objectively, making it doable to monitor sleep less than natural situations with minimum distortions. The actigraph measures wrist exercise using a piezoelectric factor and translates wrist actions into https://www.youtube.com/watch?v=PgNzdZr0_hg