Tackling sports are dynamic and chaotic. Athletes end up bent and folded in seemingly unpredictable ways. Fortunately, the situations occur in recognizable patterns, and these repeating patterns can give us clues on how to best warm-up and prepare. The collisions and grappling requires a wide range of flexibility and mobility. If an athlete can not move into and out of these tight and jumbled postures, they will avoid them, they will not have the necessary awareness to see them, or they will be injured when they are forced into them. A well designed training program can prepare athletes for these collision positions.