Read the following evaluations of two studies concerning the relationship between sleep patterns and academic performance:
Study 1: 'A research study conducted by the University of Sleep Sciences found that students who maintained a consistent sleep schedule performed 15% better in exams than those with irregular sleep patterns. The study suggests that sleep regularity is crucial for cognitive functions related to focus and memory retention.'
Study 2: 'Conversely, a recent survey by the Academic Health Journal reported that nearly 70% of students believe that their study habits, rather than sleep, play a more substantial role in their academic success. The survey indicates that many students prioritize studying late into the night over establishing a regular sleep routine.'
Based on these studies, which option best synthesizes the information regarding the impact of sleep on academic performance?