“ By shaking the weight, the lifter can incorporate momentum into the lift, which can help them lift more weight than they would be able to otherwise. This is because momentum is a force that can help an object accelerate, and in the case of weightlifting, it can help the lifter overcome the weight's inertia.
There are a few different ways that lifters can shake the weight. One way is to simply shake their arms back and forth as they lift. Another way is to use a technique called "kipping," which involves swinging the weight back and forth in a circular motion. Kipping is a more advanced technique, and it can be dangerous if not done correctly.
The use of shaking to cheat in weightlifting is not new. In fact, it was a common practice in the early days of weightlifting. However, as weightlifting became more regulated, the use of shaking became less common. Today, most weightlifting competitions have rules in place to prevent lifters from using shaking to cheat.“