"Impact of Sprint Stair Climbing Snacks on Markers of Metabolism and Vascular Function"

Three high-carbohydrate meals will be consumed (breakfast, lunch, and dinner) at \~3 hour intervals while participants remain in a seated position for the entire 9 hour intervention period.

"Three high-carbohydrate meals will be consumed (breakfast, lunch, and dinner) at \~3 hour intervals while participants remain in a seated position for the entire 9 hour intervention period except that once every hour they will ascend three flights of stairs vigorously (stair climbing sprint snack) for a total of 8 active breaks."

Three low-carbohydrate meals will be consumed (breakfast, lunch, and dinner) at \~3 hour intervals while participants remain in a seated position for the entire 9 hour intervention period. This condition will provide a condition where the blood glucose and insulin responses are relatively low and stable throughout the day.