A handheld plant compression tool for performing high-stress training. The tool includes an upper shaft having a plurality of upper shaft notches disposed along an edge of the upper shaft. The plurality of upper shaft notches have rounded shapes that vary in size. The tool includes a lower shaft having a plurality of lower shaft notches disposed along an edge of the lower shaft. The plurality of lower shaft notches have rounded shapes that vary in size. The tool includes a handle attached to or integrated with one or both of the upper shaft and the lower shaft. The upper shaft and the lower shaft are coupled to each other at a pivot point. A plurality of apertures are formed by the plurality of upper shaft notches and the plurality of lower shaft notches when the tool is in use.