Why is it rising? Well, if you put too much yeast and wait, and you'll have it rise up and up with many many bubbles inside. Wait too long however, the bubbles will collapse, and you'll end up with some mushy dough.
This is breadtalk.org, right?
When you already know BTC you will know how to profit despite a fall or rise. All you have to do is learn and you approach it.Then you can decide which way you like. Do not Think why he can rise or fall. Profit or loss is common. The important thing is how you increase profits and reduce losses