The time humans can endure asphyxiation before dying is four to six minutes, but for the majority, there aren't significant issues within four minutes. A few can endure up to six minutes.
However, for an untrained person, asphyxiation beyond six minutes will lead to irreversible brain damage due to lack of oxygen.
The asphyxiation mentioned here doesn't include holding one's breath, which typically doesn't equate to oxygen deprivation. Holding your breath involves storing enough oxygen in the lungs to supply the body's needs.
It requires strong lung capacity to support it.
Generally, an untrained person can hold their breath for about a minute, with two to three minutes being common, and even four minutes. Trained individuals can hold their breath for over ten minutes, even reaching 20 minutes.
Wang Feng's nose and mouth were taped, causing forced asphyxiation for about three to four minutes.
