double profit double profit but can also double profit too, double profit can bring double profit but not necessarily because it can also bring double losses, forex is a risky business and you cannot be 100% sure with the price to be moved in favor, I hear people open a lot bigger and double the money there in one day, but they are more experienced and pro. and a double Lot will give you a double benefit, but it depends on how you use it. Some traders trade with two lots and set different targets. I would prefer to set only one lot with one target because if the first lot hits the target and the second lot does not get the target but retreats to reach a stop loss, then it will be a wasted effort. If you believe in your analysis, just use one lot size.