Rehabilitation, or rehab, is a crucial stage in the recovery journey for many individuals dealing with substance use disorders, mental health issues, or physical injuries. It involves various therapies and activities designed to help people regain or improve their capabilities that might have been impaired due to these health concerns. Whether it’s a sports athlete overcoming an injury, a stroke patient relearning basic life skills, or an individual battling addiction, rehab plays pivotal roles in these diverse scenarios.

In substance use cases, rehab aims to bring people back from the depths of addiction. Programs can sometimes include detoxing stages, residential or outpatient therapies, and various types of counseling sessions. The goals of these interventions are to help patients fight their urges, understand their triggers, cope with cravings, and relearn healthy habits. All these are under the assurance of confidentiality in an environment of safety, allowing recovering individuals to focus primarily on their healing.

Evidence-based rehab for substance use disorders includes a combination of therapies such as cognitive-behavioral therapy (CBT), motivational interviewing (MI), and sometimes medication-assisted therapy (MAT). These techniques provide individuals the physical and psychological support needed to navigate the difficult path of overcoming addiction.

For those battling mental health disorders, the goal of rehab is to help the individual manage their conditions effectively. Depending on the severity, it could involve a team of psychiatrists, psychotherapists, social workers, and occupational therapists.

Rehab for physical injuries or illnesses, on the other hand, focuses mainly on restoring functionality and quality of life. This can be seen in physical therapy sessions involving strength-building exercises and mobility training to improve physical endurance and independence. Occupational therapy also falls under this category, enabling individuals to relearn everyday tasks and regain the skills they've lost.

Ultimately, recovery is a uniquely personal journey. What works for one may not work for another. It is crucial to understand that rehab doesn't aim to 'fix' a person in the most immediate sense, but rather, it seeks to facilitate the healing process. The road might be grueling, but the destination, a more fulfilling life free from the issues they confront, is absolutely worth it. The role of rehab cannot be understated – it's a lifeline that brings hope, a stepping stone to recovery, and a sanctuary where individuals learn to heal and thrive again.