What it trains
Shadow boxing is boxing without an opponent or a bag, and it trains fitness, coordination and footwork at once. Your shoulders work constantly, keeping your guard up and throwing punches, and your triceps straighten the arm. The power comes from below: your legs push off, your hips turn and your obliques carry the movement on to your arm. Your calves work as you stay light on the balls of your feet. The only resistance is the air, so it is not strength training, but at a high tempo in rounds of a few minutes it becomes a proper cardio session. At a calmer pace it turns into technique practice.
Common mistakes
- Feet standing still. Punching with your arms alone is both easier and less like boxing. Take small steps in every direction between punches, and let each punch start at the hip.
- Not breathing out as you punch. Holding your breath tires you quickly. Blow out a short burst of air with every punch.
- Punching without a plan. Random punches until you run out of steam make for an uneven session. Set a round timer and work on set combinations, such as two straight punches, adding a hook once they feel sharp.
Variations and alternatives
- Battle ropes give your arms and shoulders real resistance in the same kind of short, hard rounds.
- The jump rope is the boxer's classic companion and trains light, quick footwork.
- The band woodchopper trains the turn from hip to shoulder against resistance, at home.
How to plan your sessions
Rounds are the natural format. Start with 3 to 4 rounds of two minutes with a minute's rest, and work towards 5 to 6 rounds of three minutes. Finish each round with 10 to 20 seconds at top speed. A few easy minutes also make a good warm-up before a strength session. Two or three round-based sessions a week suit most people, and how often should you train covers the rest of your week.
Make the session tougher with more rounds, longer rounds or a higher tempo, keeping the rest unchanged so you know what worked. That is progressive overload without a single weight. Should your shoulders or elbows become painful rather than merely tired, stop and let a doctor or physiotherapist examine them.