Group 1 - The article discusses the challenges and discomforts associated with watching long 3D movies, particularly focusing on bladder pressure and eye strain experienced by viewers [1][8][10] - It emphasizes the importance of managing hydration before and during the movie to avoid frequent restroom breaks, suggesting a strategy of drinking water in moderation prior to the film [2][3][16] - The article highlights the impact of certain beverages, such as those containing caffeine and alcohol, on increasing the urgency to urinate, advising viewers to be cautious with their drink choices [4][16][17] Group 2 - The article explains the physiological reasons behind eye fatigue when watching 3D films, detailing how the brain processes depth perception and the resulting strain on the visual system [10][11] - It provides tips for reducing discomfort during 3D viewing, such as selecting optimal seating positions and taking brief breaks to rest the eyes [11][16] - The article also addresses physical discomforts like knee pain and calf swelling from prolonged sitting, suggesting minor movements to alleviate these issues during the film [14][15][16]