I’m not talking about the lifestyle.
I’m talking about the poor weightlifting technique.
Whenever you swing or use momentum to lift weights, you are cheating. Rather than necessarily being a bad thing, this is a technique used to perform reps after you have reached positive failure. This allows you to use momentum and other muscles to get the weight up so you can work towards negative failure. The problem you usually see is people doing this for all of their repetitions. You are better off using a weight you can actually lift to focus the exercise on the muscle groups that are supposed to be targeted. If you are recruiting other muscles to help you lift weights by using improper form, those other muscles are sharing the workload which reduces the effectiveness of the exercise on the targeted muscle. When doing a switch-foot tricep floater the individual is mostly recruiting their weight and their back, rather than the intended muscle the triceps, in order to lift the weight. Notice how the individual is bending their back dramatically:
Unfortunately techniques like this are taught to weight lifters:
Ideally you want to train slow enough to not use momentum or swinging in your lifts. The actual repetition speed isn’t as crucial since it has been found that equal strength have been equal for multiple repetition speeds. Lift a weight with good form and continue to increase in weight. Another benefit to lifting lighter weights with correct form is the decreased strain put on the rest of your body. If you can lift lighter weight and get the same results wouldn’t you? If you could go from point A to point B with 50 gallons of gas or 100 gallons of gas, why would you choose 100? Choose an appropriate weight and don’t swing. Sitting down or using equipment like preacher benches can help eliminate the opportunity to use momentum.