Sleep 23 - Action - Progressive muscle relaxation.
A slow (roughly 15minutes) purposeful, piece by piece, relaxation of your body where you focus on individual body parts, tensing and relaxing until you are sure that part is fully relaxed.
References
• ‘Try this: Progressive muscle relaxation for sleep’
By Matthew Solan, Executive Editor, Harvard Men's Health Watch, Dec 1, 2023
https://www.health.harvard.edu/staying-healthy/try-this-progressive-muscle-relaxation-for-sleep
• ‘Progressive Muscle Relaxation’, University of Toledo - https://www.utoledo.edu/studentaffairs/counseling/anxietytoolbox/pmr.html
• ‘Effectiveness of Progressive Muscle Relaxation, Deep Breathing, and Guided Imagery in Promoting Psychological and Physiological States of Relaxation’ - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8272667/