The Norwegian 🇳🇴 4x4 Protocol is one of the most proven ways to increase your VO2 Max (your engine)! Benefits for soccer includes: ✅Recover faster between high intensity actions ✅Maintain a higher work rate for longer ✅Cover more distance at high speeds ✅Resistance to fatigue How to do this run: ➡️4-Minutes HARD (85-95% HR Max) ➡️3-Minutes EASY (active recovery walk/jog) ➡️Repeat 4x Doing it on a treadmill is great way to ensure you are keeping a higher pace for the entire 4-minutes if you don