Most traders have their favorite markets.
In many cases, though, the same markets you excel in with interday trading, you may perish in with intraday trading. It's vital, then, to know how to pick good markets for your day-trading strategies. But one market can't be a panacea for all day-trading problems. Professional traders often find they have a special knack for some markets, whether it's from past job experience, training, whatever. Some people just perform better in certain markets.