What principle states that you must increase the amount of regular exercise or activity that you normally do to challenge your body? the overload principle
interval principle
specificity principle
progressive principle

The overload principle.

Explanation:

The overload principle is one of the seven big laws of fitness and training. Simply put, it says that you have to increase the intensity, duration, type, or time of a workout progressively in order to see adaptations. i hope that i helped you. UwU

i would definitly say b : )