Support defines that level where buyers are strong enough to keep price from falling further. Resistance defines that level where sellers are too strong to allow price to rise further. Support and resistance are created because price has memory. Those prices where significant buyers or sellers entered the market in the past will tend to generate a similar mix of participants when price again returns to that level. When price pushes above resistance, it becomes a new support level. When price falls below support, that level becomes resistance. When a level of support or resistance is penetrated, price tends to thrust forward sharply as the crowd notices the BREAKOUT and jumps in to buy or sell. When a level is penetrated but does not attract a crowd of buyers or sellers, it often falls back below the old support or resistance. This failure is known as a FALSE BREAKOUT. Support and resistance come in all varieties and strengths. They most often manifest as horizontal price levels. But trend lines at various angles represent support and resistance as well. The length of time that a support or resistance level exists determines the strength or weakness of that level. The strength or weakness determines how much buying or selling interest will be required to break the level. Also, the greater volume traded at any level, the stronger that level will be. Support and resistance exist in all time frames and all markets. Levels in longer time frames are stronger than those in shorter time frames.