Les Gellis, associate teaching professor of psychology, was interviewed for a BBC article titled, "The 8 science-backed secrets to a more restful night's sleep." He was among six sleep experts who offered advice on how to improve bedtime habits.

Gellis notes that focusing on non-stimulating thoughts before bed, through a method he calls Cognitive Refocusing Treatment for Insomnia (CRT-I), can help reduce nighttime arousal.

“The presumed mechanism is that CRT-I reduces emotionally and physiologically activating thought content (for example, worry, rumination, dwelling on daily and future concerns, and thinking about the consequences of poor sleep) to improve the calm and relaxed state that may promote sleep onset,” Gellis said in the article.