This week we have a great fartlek session presented by speedy couple Angie and Sam Petty. WHAT 4 sets of (3mins on, 3mins off, 90secs on, 90secs off) Plus: 4x8secs strides to finish On: 5k pace Off: Easy jog Feels: Movin’! In the podcast, Angie explains how this workout is designed to keep the heart[…]