Intervals Run 800m w/ 100m recovery + 300m w/ 100m recovery + 800m w/ 100m recovery + 100m w/ 100m recovery + 300m w/ 100m recovery + 800m w/ 100m recovery + 300m w/ 100m recovery + 800m w/ 100m recovery + 400m w/ 100m recovery + 800m w/ 100m recove…