Abstract: A new heavy bag and support mechanism for allowing a bag to move in a variety of ways after being struck. The inventive device includes a support beam having an I-shaped cross-section. A swiveling rail support is coupled to the support beam. A rolling assembly is slidably coupled with the support beam. A height adjustment tube is swively secured to the rolling assembly. A heavy bag is provided having a wide upper portion and a narrow lower portion. An upper surface of the wide upper portion is swively coupled with a free end of the height adjustment tube.