Alts tend to do this regularly and it can be incredibly punishing but also incredibly lucrative.
When you look at HTF charts many just follow a bullish market structure, but in between the fresh highs these markets make, they very often correct 60 - 80%.
It doesn't change the fact that being in the higher low territory for the markets that demonstrate this structure doesn't represent a huge amount of opportunity.
It's still an uptrend, but it very strongly punishes on the way down.