Examining the Circadian Timing Effects of the Hypotensive Response to Exercise

This study examines whether the time of day you exercise affects how much your blood pressure drops afterward. Researchers want to know if morning versus evening exercise produces different blood pressure responses in adults with mildly elevated blood pressure. **You may be eligible if:** - You are between 18 and 39 years old - Your resting blood pressure is in the elevated-normal range (between 120/80 and 139/89 mmHg) - You are not highly active (less than 300 minutes of moderate-to-vigorous activity per week) - You do not currently take medications that affect blood pressure or blood vessels - You do not smoke, use sleep aids, or work night/rotating shifts **You may NOT be eligible if:** - You have low blood pressure (below 120/80) or high blood pressure (140/90 or above) - You have a chronic illness such as heart disease, diabetes, cancer, or kidney disease - You have a sleep disorder (e.g., sleep apnea, insomnia) - You have a BMI below 18.5 or above 35 - You are pregnant or breastfeeding - You have any medical reason that prevents aerobic exercise Talk to your doctor to see if this trial is right for you.