You can make money even in just a matter of seconds but that would be risk and will be using a bit high leverage. But I think you were referring to day trading? Honestly it depends on how good you are at trading and analysis, some people could lose a lot even in day trading because of bad analysis.
Many of my friends also said that making money in day trading in just a second is possible but the risk is too high that only those with high-risk tolerance could possibly make it. Actually, I haven't tried it because I don't have yet the amount of money that I could be willing to lose in just a second but I honestly wanted to try it, not solely aiming for a high or great profit in just a second but at least I could try it and learn from it, and as a trader, it could be a great experienced.