Deca Durabolin contains the main active ingredient, Nandrolone, which has the effects of increasing calcium metabolism, stimulating bone marrow to produce red blood cells, and having minimal androgenic effects.

Arm wrestling is a popular activity in Vietnam, especially among students and young adult males as a way to display their muscular prowess. However, the consequences of these matches can be severe, with many suffering from muscle pain, strained arm muscles, and even broken arms, sometimes accompanied by radial nerve palsy. Consequently, participants must be aware of the inherent risks involved in this potentially dangerous game.