When using a demo account, you do not risk real money, so it is very likely that you will forget trading involves risk.
Many traders use demo accounts in the wrong way and place trades they would not risk placing when trading with real money. If you do not use your demo account well, then it is binary options practice likely that you will do so when you start trading with real money.
Always analyze every trade and never make a hasty decision, because this is the way you are supposed to behave when trading with a live account. However, this can rarely be done with the help of a demo account, especially if you are not patient enough and are not used to following a strict list of trading rules. The reason why most traders cannot learn how to manage their money properly while working with a demo account is, because they are trading with virtual money and they assume that it does not matter whether they will lose thousands, or not.
This is why many traders make a mistake by using their demo accounts to trade with enormous amounts of money. This way you will make the trading experience more realistic and learn how to control your money.