The commonest form of sleep apnea is obstructive sleep apnea (OSA), and that is because of rest of soppy tissue in the back of the throat that blocks the passage of air. Central sleep apnea (CSA) is due to irregularities from the Mind's indicators to breathe. Most people with sleep https://allhealthmarket.com/product/highly-recommended/personal-security/rfid-credit-card-protector/rfid-shielded-sleeve-card-blocking-13-56mhz-ic-card-protection-nfc-security-card-prevent-unauthorized-scanning/