Technique in weight training is very important for achieving the expected progress, but also for protecting the body of the sportsman. The first important thing is to learn correctly the basic movements.
In this type of training there is a kind of classic set of exercises, which the sportsman needs to master from the beginning. This set includes exercises with free weights (dumbbells and barbells). While training with these, the movement is not imposed by any machine. When executed without the supervision of a fitness instructor, it is possible that these movements are done in a wrong way, a situation which increases the risk of accidents a lot.
One of the most frequent mistakes is an incorrect position of the spine. Some exercises (bench press, barbell curls) could involve exaggerated arching, while others (sit up bend, dead lift, squats, etc.) involve unjustified flexing (hunching).
These wrong positions can lead to unfavourable stress exerted over the spine, knees or shoulders. Besides, they can direct the effort to other groups of muscles than the ones intended. The result is that none of these are properly trained, because no exercises specific to the...