It looks like just an normal rebound after several weekd of market falling down. As we can see bitcoin can't sustain to break and hold even just in 4k$ level. And ad of this writing market are red again maybe we are again in consolidation stage and lets see if where the market heads on.
I think it takes time for that. although this is a normal increase. the price of $ 4k is the new price for this year, even surviving, or stable at that price will be something good after a few months. I'm sure there will be a good increase in crypto prices this year.