Ive talked about this in a few videos. But here is the skinny on high/low trading on 15min. When price gains or drops levels, identifying the new highs and lows can help you get a prediction of where price should bounce.
Remember, there is no #1 FOOLPROOF way to trade the market......you have to KNOW your system and TRADE your system. I've been exposed to many great systems of FOREX trading. This is just something that I've learned along the way. It works pretty good on 15min.