Sudden swings in Bitcoin are nothing new, but surprised is this time price surged, actually I still don't know what is the reason for price surged, there was not a single clear reason for the spike apart from improving sentiment. Anyway, it's impossible to receive 1000% in a few days, check the 2017 - 2018 history, that time price surged like crazy, it's step by step, actually almost a year to do that
Actually you are right mate, it takes years for some of these coins to attain such percentage increase but we have some coins that can do that within the shortest period of time which can be counted as days, it once happened in the last bull run, some altcoins short up to as high as 1500%.
When bitcoin was moving sideways then, most of us that experienced this didn’t fully understand how the system works then, we kept on holding thinking it will always continue to rise from there and I personally set a target that until it increase to 10000% before I can take profit, it was at that time that DUMP first introduced itself to me, and then I realize we don’t only have the presence of PUMP in the market but dump too.