 today. All individuals are unique. Your results can and will vary. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Tax fees may apply. If you're moody, blame the heat. CBS's Donya Backus with Cleveland Clinic psychologist Dr. Susan Albers. I just feel like I get tired more. Research shows excessive heat can impact mood, triggering increases in anxiety, stress, and cognitive difficulties.