From men dipping their testicles in soy sauce to teenagers putting coins in iPhone chargers, several bizarre trends have circulated TikTok the past few weeks.
Now, a disgusting trend has begun to circulate that involves an enormous amount of salt.
The challenge, widely called the "Salt Challenge", sees teenagers pouring salt directly into the mouth of the container.
In a video, the user of TikTok Landon poured a huge amount into his mouth, before spitting and choking.
Despite the fact that it clearly looks very unpleasant, he captioned the video: "Someone else tries to do this".
TikTok user Jonathan also tried the challenge, captioning his video: “Salt challenge! That was disgusting.
Although the trend is seen as a little fun, consuming too much salt can have dangerous side effects.
Speaking to Mirror Online, Dr. Simran Deo, UK online doctor Zava, said: "As a doctor, I strongly recommend that people do not participate in this activity. Eating too much salt is very bad for your health, immediately and in the long run.
"In the short term, depending on how much you have ingested, eating too much salt can be poisonous. This is because it increases the levels of sodium in our bodies, which can cause intense thirst, confusion, nausea and vomiting. In extreme cases it can also lead to seizures, coma or even fatal – as high sodium levels cause the brain to swell against the inside of the skull.
"If you think someone has swallowed too much salt, encourage them to drink water. Call emergency services if you stop breathing, experience a seizure or lose consciousness.
"In the long run, eating too much salt on a daily basis affects your health blood pressure. This is because the body holds a lot of water and the tension of pumping the extra fluid around the body makes the heart work harder.
"In addition to the tension in the heart, eating too much salt can lead to cardiovascular diseases, such as heart attack and stroke, high blood pressure, headaches, kidney stones and kidney disease.
"UK guidelines recommend limiting your salt intake to about a teaspoon a day – but many foods are high in salt, so it’s worth checking labels for things like bread, chips, gravy, noodles, sausages and breakfast cereal and swap to reduce salt options where possible. "