What is a common sign that a person is lifting weights that are too heavy?

Struggling to maintain proper form is a common sign that a person is lifting weights that are too heavy. Proper form is crucial in resistance training as it not only ensures that the targeted muscles are being effectively worked but also helps prevent injuries. When weights exceed a person's capability, they may start to compensate by using incorrect techniques, which can involve bending their back, jerking motions, or engaging other muscle groups that are not intended to be targeted. This degradation of form can lead to ineffective workouts and a heightened risk of injury, making it an important indicator that adjustments to weight should be made.

Conversely, completing all repetitions with ease indicates that the weight is too light, feeling a burn in the muscles suggests an effective workout within the appropriate weight range, and increased muscle definition typically reflects proper training practices rather than indicating the weight is too heavy.