As you can see from the description above, there are significant opportunities and risks in foreign exchange markets. Aggressive traders might experience profit/loss swings of 20-30% daily. This calls for strict stop-loss policies in positions that are moving against you.
Fortunately, there are no daily limits on foreign exchange trading and no restrictions on trading hours other than the weekend. This means that there will nearly always be an opportunity to react to moves in the main currency markets and a low risk of getting caught without the opportunity of getting out. Of course, the market can move very fast and a stop-loss order is by no means a guarantee of getting out at the desired level.