Behavioral and biological rhythms are essential for health. No study evaluated behavioral
rhythm or rhythm regulation in chronic pain and how this impacts functioning. The objective
of this study is to gather preliminary data, focusing on the role of behavioral rhythms in
the cardinal clinical symptoms of chronic pain (i.e., sleep, fatigue, and mood).
Additionally, this study will provide preliminary data for the feasibility and acceptability
of the therapeutic approach aiming to strengthen behavioral rhythms for patients with chronic