To become aware of the most practical measures of hydration status.To describe sources of water input and output and the basics of water balance.To understand how hydration status may impact daily cognitive performance.

Symptomatic knee osteoarthritis (OA) is a prevalent chronic degenerative disease that is associated with impaired quality of life and physical functioning. Although there is no cure for knee OA, regular exercise participation consistently results in improvements in quality of life, physical function, and knee OA symptoms. Findings from contemporary randomized controlled trials also demonstrate that lifestyle interventions involving modification of exercise and dietary behaviors yield superior improvements in relevant quality of life outcomes relative to either intervention alone.

Depression is a common disorder that is associated with compromised quality of life, increased health care costs, and greater risk for a variety of medical conditions, particularly coronary heart disease. This review examines methods for assessing depression and discusses current treatment approaches. Traditional treatments include psychotherapy and antidepressant medications, but such treatments are not effective for all patients and alternative approaches have recently received increased attention, especially the use of aerobic exercise. This review examines evidence that exercise is effective in improving depressive symptoms among patients with major depression and offers practical suggestions for helping patients initiate and maintain exercise in their daily lives.

Cognitive-behavioral therapy for insomnia is superior to sleeping pills for treating insomnia, and its accessibility is rapidly improving. Exercise can also promote sleep in insomnia. A list of recommendations on good sleep practices can be applied prior to consulting with a clinician and can often resolve insomnia symptoms.

Preventing physical inactivity in youth starts in the preschool years and requires strategies targeting schools, caregivers and families that limit excessive screen time and improve participation in PE, organized sports and active play.