Training
No, once you notice that you are losing control or your reps are getting "sloppy" - end your set.
We prioritize form over everything. FORM IS QUEEN. Improper form can lead to injuries, so it's not worth the extra one or two reps. As you continue to progress and your strength and control increase, your reps will increase. But always stop the exercise (or lower the weight if possible/you have options) if your form is faltering.
It is recommended to use lighter weight if this occurs frequently, until your strength increases.
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