Advice for taking 2 tests on same day

<p>Hello, ppl</p>

<p>I am studying for AP exams and I have to take 2 tests on the same day (morning & afternoon), So can you guys give me advice or tell me your experience? I dont wanna be exhausted after the 1st test... and fortunately I have 1 hour and 20 minutes break between the two exams :)</p>