Mattress

src: www.amerisleep.com A mattress is a large pad for supporting the reclining body, used as a bed or as part of a bed. Mattresses may cons...

Insomnia

src: www.sleepzoo.com Insomnia , also known as sleeplessness , is a sleep disorder where people have trouble sleeping. They may have difficu...

Apnea-hypopnea index

src: jcsm.aasm.org The Apnea-Hypopnea Index or Apnoea-Hypopnoea Index (AHI) is an index used to indicate the severity of sleep apnea. It i...

Insomnia

src: www.sleepzoo.com Insomnia , also known as sleeplessness , is a sleep disorder where people have trouble sleeping. They may have difficu...