Main muscles performing the movement: Chest
Other muscles involved in movement: Shoulders, triceps, abdominal muscles
Mandatory Equipment: Training bag
METHOD OF PERFORMANCE
1. Use heavy training (boxing) bag for this exercise. Stand in standing position beside him, your legs are spread apart. Place your hand on the bag at chest height. This will be your starting position.
2. Begin by twisting at the waist, pushing forward the sack as hard as you possible can. Perform this movement quickly, pushing away the bag from the body.
3. Hold the bag after you shake it and position it to the starting position.