Question

Jane was not feeling challenged by her workout, so she applied the principle of overload by adding more weight to her squats and bench press.

Answer 1

The statement "Jane was not feeling challenged by her workout, so she applied the principle of overload by adding more weight to her squats and bench press."  is that she should just make it slowly and add weights to lift just a little in each time until she can carry it so that it would not force her muscle.