When a crypto or stock is moving up, slowly but surely it means there are people selling, but more people buying overall. That is healthy, because everytime people sell, but the stocks moves up we create some support levels, I know you know that but, when the increase in price is so fast as a “pump” or a Shiba day (Yea we have seen in this group and Doge how they always turn on bad, we had them) that creates a huge people to be in profit in a small amount of time, what that causes overall is people will sell as is normal, but due the reason the sell is going to ocurre in a short amount a time and is going to be a big sell, all indicators will be down and the sell candle will be huge, this can trigger a massive sell pressure because eventho I mentioned support levels, the levels are not very strong to hold if the fear increase.