Obviously if we want to do forex business then our first practice with as a demo account. after we have enough experience and good control as a strategy in forex business then we run it using real account! and Leverage helps you to provide more purchasing power and you can use whatever leverage you want depending on your capital and the broker will only close your trade if your trade reaches 1% loss. If you want your trades to survive up to 10% loss, use 1:10 leverage.