Definition: An FVG is a market imbalance or "gap" created during a sharp, rapid price move.
The 3-Candle Rule: It is identified when the wick of the 1st candle and the wick of the 3rd candle do not touch, leaving a gap in the middle (2nd) candle.
The "Magnet" Effect: Price tends to return to these gaps to "fill" them (rebalance) before continuing its trend.
Trading Strategy: Traders use these zones as high-probability areas for entries (Buy in a Bullish FVG / Sell in a Bearish FVG).