We’re taking it outside today!
You’re going to preferably find a hill. This doesn’t mean a mountain, it means a small hill.
Very simply, run up the hill and walk down 10 times.
If you don’t have a hill, you’re going to do sidewalk sprints. Sprint about 100m and walk back. If you choose this option, you might need a little more recovery time so take an extra few seconds if needed.
Simple, fun and effective!