Obstructive Sleep Apnea (OSA)

OSA occurs when the muscles in the upper airways relax during sleep. This relaxation of muscles lead to blockage of the airway passage and thus episodes of desaturation (lowering of oxygenation). 

Sings of having OSA include fatigue and low energy, morning headache, loud snoring, easily falling asleep during daytime.

Most effective treatment is a CPAP (Continuous Positive Airway Pressure) machine. A device that will "splint" the airways open using a constant air flow through either mouth or nose while sleeping. 

If left untreated, OSA can lead to many health problems including cardiac arrhythmia, hypertension, and diabetes among many others.