Sleep Hygiene, Sarcopenia, and Cognitive Function in Respiratory Disease

This study is examining the relationships between sleep quality, muscle weakness (sarcopenia), and thinking/memory problems (cognitive decline) in patients with chronic lung diseases — specifically COPD or idiopathic pulmonary fibrosis (IPF). It is an observational study with no experimental treatments. **You may be eligible if...** - You have been diagnosed with COPD (chronic obstructive pulmonary disease) or IPF (idiopathic pulmonary fibrosis) **You may NOT be eligible if...** - You have been hospitalized for a severe flare-up of your lung disease within the past month - You have already been diagnosed with sarcopenia (significant muscle loss) or cognitive impairment - You are currently on continuous supplemental oxygen or non-invasive ventilation at home - You have sleep apnea that requires a CPAP machine - You have significant complications such as serious heart, liver, kidney, cancer, or neurological disease Talk to your doctor to see if this trial is right for you.