One way we like to build up intensity outside of a run is to use strength training. It’s like an introduction to the stress of breathing and working harder from the safety of your living room. Or a park, or wherever you choose to do this workout.
You’ll be combining bodyweight exercises–burpees with squat jumps. The workout is only four minutes long, so it’s a short amount of time to practice working intensely. Remember that the goal is to push but not injure, so don’t sacrifice good running form for speed or density.