We can never say what really happens, just another day you wake up and see due to some disturbances the bitcoin demands has increased, and supplies being the same the rate bounces up over the night, you will then realise in your 6 hours of sleep bitcoin jumped 6k dollars.

Although I am just giving an manipulated situations example but the market can never be predicted, its investment and investments will have sudden ups and downs as well as long monotonous periods.