<qa>  What is the population of obese adults predicted to create in the next few decades?The growing population of obese adults is predicted to create a large public health burden in the next few decades. This study examines function of small blood vessels providing blood flow to skeletal muscles, to test if younger obese individuals 40 years old, BMI 30 are already displaying reductions in blood vessel function. This study will test if the signals blood vessels use to increase blood flow are changing in these same subjects. Findings from this study may help create treatments to delay or prevent some of the negative effects of obesity on vascular health. 