1. Physicality and Core Strength 

Physicality is a fundamental attribute for centre backs. It’s essential for dealing with opposing strikers and maintaining your position during defensive plays. Core strength is particularly important—it's the foundation of your physical presence on the pitch. Strong core muscles help you maintain balance and resist being pushed off the ball. 

Improving your core strength can be achieved through exercises like planks, leg raises, and medicine ball throws. Centre backs need to withstand challenges from imposing strikers, much like Alan Shearer, who, despite not being exceptionally tall, was known for his formidable strength. In academy play, encountering physically strong forwards is common, so building core strength will help you hold your ground and perform effectively. 

2. Agility and Speed 

While physical strength is crucial, agility and speed are equally important. The stereotype of the centre back as merely a strong, immobile defender is outdated. Modern football requires centre backs to be agile and quick on their feet. Speed is vital for handling counter-attacks and reacting swiftly to the pace of the game. 

Counter-attacks are a common tactic in football, as seen with teams like Leicester City under Claudio Ranieri or Jose Mourinho’s setups. A centre back needs to be able to quickly transition from defence to attack, often sprinting to cover ground and prevent scoring opportunities. Work on your agility through drills that enhance your reaction time and quick directional changes. Training methods such as shuttle runs, ladder drills, and interval sprints can be highly effective. 

3. Positioning and Decision-Making 

Effective positioning is crucial for centre backs. You need to anticipate the movement of the ball and the opposing players, positioning yourself to block shots, intercept passes, and challenge for headers. Good decision-making helps you make the right moves in crucial moments, such as when to step up for an offside trap or when to hold your line. 

In an academy setting, focus on understanding different tactical setups and positioning strategies. Participating in various drills and practice matches will help you refine your decision-making skills. Coaches often assess how well centre backs read the game and position themselves to support their team effectively. 

4. Consistent Work Ethic 

Finally, maintaining a high level of effort and focus throughout training and matches is essential. Being a centre back requires dedication to both physical and tactical aspects of the game. Consistent effort in improving your physical attributes, such as strength and agility, as well as honing your technical skills, will make a significant difference. 

By integrating these attributes into your training regime, you can enhance your performance as a centre back. Football academies look for players who demonstrate not only technical skills but also physical resilience and tactical intelligence. Embrace these qualities, and you’ll be well-prepared to excel in your academy environment.