Usually, snoring occurs when the lower jaw relaxes, blocking the upper throat and causing a vibration, and the consequent noise every person has heard at least once. Those who experience it are largely unaware of it. Some say snoring can occur even when people are awake.
For instance, it could happen when one is just falling asleep or caught in an in-between phase of nodding off. That said, snorers do not realize they are snoring, regardless of how it happens. Usually, apnea patients wake up momentarily from sleep, gasping for breath with an open mouth. This waking up can also occur in people who hear their own snoring sounds.
In fact, there have been instances where snorers cannot understand why their bedmates tell them to stop snoring. Invariably, the response to that is a no, even though snoring can occur when one is awake. That snoring can be a symptom of obstructive sleep apnea, which is a sleep disorder in which people stop breathing for intervals as long as 10 seconds, before resuming normal breathing. This apnea cycle is followed by constricted breathing, which typically occurs along with loud snoring. There is a device called a mandibular advancement device, used to advance the lower jaw and bring about free flow of air by clearing constrictions in the back of the throat. Such snoring remedies can ensure peaceful sleep at night, through what is technically called jaw advancement.
Like in cats, you may have heard people snoring while they are awake, and in a place other than at home. For instance, it could occur in a person doing yoga, if they suddenly fell asleep after a highly relaxing pose. The consequence of that is more or less the same – the soft muscle in the throat relaxes and causes a constriction in the airway. This is similar to what people with obstructive sleep apnea experience, although it does not occur as frequently here as it does in those not suffering from that major sleep disorder. One likely reason is an upright posture, which a meditating person is likely to be in. Such kinds of mild snoring can be circumvented by changing positions, so as to allow gravity to hold the soft tissues out of the upper airway. This is why sleeping positions are vital to whether or not you end up snoring each night.