The objective of the Barbell Snatch is to lift it from the ground to overhead in one swift movement. How that happens is through a series of fast muscle patterns. A lifter will drive the bar upward as high as they can and then pull themselves quickly underneath the bar to land in a squat position with the barbell overhead. The art of dropping under the bar quickly decreases the height the bar needs to reach; meaning the faster a lifter can drop the more weight they can lift since it does not need to go as high. Virtually every muscle in your body fires to drive the bar up and overhead. This highly skilled movement is one of the most astounding moves to watch and arguably one of the most frustrating to learn due to the complexity.
The Snatch one of two lifts in the sport of Olympic Lifting; the other is the Clean and Jerk.
The Barbell Snatch