What is ResCalm? ResCalm was researched and developed jointly by Nethelands National Stress Management Centre. ResCalm is a deep breathing biofeedback training device to relieve stress, depression, insomnia and improve attention and concentration, etc. ResCalm provides various training sessions ResCalm provides total 6 various deep breathing training sessions such as Breath Pathfinder, Focus, Resilience, Skilled Breahting, Breath Challenger, Slow breathing. Easy Biofeedback Training ResCalm collects the heart rate data through a pulse sensor and show the information of the heart rhythm while doing the deep breath training Video for How to use ResCalm >>> https://youtu.be/I5JrXbK9qf0 Freatures Through a deep breathing to adjust the balance between the sympathetic and parasympathetic helps you maintain a healthy lifestyle. Taking a deep breath can be utilized in the treatment of such as stress, depression, insomnia, ADHD and headache without the side effects of drug therapy. If you continue to use ResCalm, it helps you change your negative emotions such as anxiety, frustration and depression to positive emotions. * ResCalm App. Download https://play.google.com/store/apps/details?id=com.gnc7.rescalm&hl=en * Buy ResCalm (H/W) http://www.rescalm.co.kr/ * Contact Us rescalmvoc@gmail.com