Kathy has found that she must consume 2,000 calories a day to reach her health goals and she has been following this carefully, but lately she has been feeling exhausted and dizzy. A workout machine alerted her that she is exercising and losing up to 600 calories a day. Kathy did not factor this into her nutrition plan. What strategy should Kathy use to improve her habits?

Stop exercising altogether to balance the calories
Stop dieting altogether to balance the calories
Change nothing until her body adjusts on its own
Recalculate the calories she needs to consume