- Intervention C: Sitting for 8 hours interrupted by 3 min of light intensity walking (LIW, 3.2 km/h) breaks every 15 min There will be 5 days of washout period between each intervention. Each participant will complete two of three treatment conditions within 15 days of experimental period (4 days of pre monitoring period - 1 day of lab intervention - 5 days of washout period - 1 day of lab intervention - 4 days of post monitoring period).