The bodybuilding aesthetician

In combat sports, whether boxing, MMA, wrestling, or Muay Thai, making weight is a central part of competition. Fighters often face intense pressure to drop to a lower weight class before a fight, and unfortunately, some methods used are extreme and unsafe. As someone who works in nutrition and has spent years researching exercise and performance during my MSc, I see these practices far too often, and the risks are very dangerous.

Tradition and Culture Influence Methods

Across combat sports, coaches and gyms rely on long-standing traditions. Fighters often learn to cut weight the same way their coaches did, believing that “this is how it’s done.” These practices can include excessive sauna use, wearing sweat suits, fluid restriction, or very low-calorie diets in the days before a fight.

Through my experience in research and nutrition, I’ve observed that cultural norms frequently override evidence-based approaches. Even when safer, science-backed strategies exist, fighters are often encouraged to stick to older methods that may be risky.

Short-Term Gains vs. Long-Term Health

Rapid weight-cutting is often seen as a competitive advantage. Dropping several kilograms in the days before a weigh-in allows a fighter to face lighter opponents. But the focus on short-term performance comes at a cost.

Extreme methods like dehydration, fluid restriction, excessive cardio, or vomiting can quickly reduce body weight but increase the risk of dizziness, fainting, kidney stress, cognitive impairment, and cardiovascular complications. In my nutrition work, I have seen fighters take days to fully recover after these extreme cuts, which can also negatively impact in-ring performance.

Safe Strategies for Making Weight

When weight has already been reduced gradually in the weeks prior through structured fat loss, simple, strategic manipulations of water balance can help fighters make weight safely. These include:

• Reducing carbohydrate intake slightly, which temporarily lowers water stored in muscles and liver
• Reducing dietary fibre, which can reduce gut content and improve the scale weight
• Reducing sodium intake, which can help manage extracellular fluid levels

If these methods are carefully planned and executed, they allow fighters to make weight without severe dehydration or harmful practices. Crucially, when paired with a planned post-weigh-in refuel and hydration strategy, fighters can restore glycogen, electrolytes, and fluids efficiently. This supports optimal performance in the ring rather than leaving the fighter drained or compromised.

Lack of Access to Sports Science

Many gyms, particularly smaller or more traditional ones, do not have access to sports dietitians, exercise physiologists, or evidence-based coaching resources. Fighters in the US, Europe, Asia, and elsewhere often rely on rapid, extreme methods because safer alternatives are not widely known or culturally reinforced.

In my research, I have come across countless examples of fighters using unsafe methods that look effective in the short term but are detrimental to long-term health.

Economic and Competitive Pressures

For many fighters, making weight is not just a sporting challenge, it is a financial necessity. Fight purses, sponsorships, and career opportunities often depend on competing in a certain weight class. Coaches and gyms feel pressure to ensure fighters hit their target weight, which reinforces unsafe practices.

Peer pressure also plays a role. Fighters often imitate each other, normalizing practices like sauna sweating, excessive cardio, and vomiting, regardless of the discipline or country.

The Risks of Extreme Weight-Cutting

Rapid weight loss can lead to:

• Dehydration and electrolyte imbalance, causing dizziness, cramps, and impaired muscle function
• Kidney stress, especially with repeated cycles of fluid restriction
• Cognitive impairment, affecting reaction time, focus, and decision-making
• Cardiac risk, particularly dangerous for fighters with pre-existing conditions

Even methods that seem effective in the short term can have lasting health consequences, especially if repeated over a fighter’s career.

Evidence-Based Alternatives

Safer strategies focus on gradual, planned changes rather than drastic measures:

• Structured fat loss, reducing body fat slowly through nutrition and training
• Hydration and water manipulation, using carbohydrates, fibre, and sodium strategically when combined with gradual body weight reduction
• Planned refuel and rehydration, restoring glycogen, fluids, and electrolytes after weigh-in to maximize performance
• Education, teaching coaches and fighters about evidence-based sports science

In my work with athletes and through research, I have seen how these strategies protect health while allowing fighters to make weight safely and perform at their best.

Take-Home Message

Unsafe weight-cutting practices are common across combat sports worldwide. Tradition, short-term performance pressures, limited access to sports science, and economic factors all contribute to their persistence.

By applying evidence-based nutrition, gradual weight management, strategic water manipulation, and post-weigh-in refuel plans, fighters can perform at their best while minimizing health risks. As someone who works in nutrition and research, I hope more gyms and coaches will prioritise long-term safety alongside competitive success.

Disclaimer

This article is for educational purposes only and does not replace personalized medical, nutrition, or sports science advice. Any strategies for weight management or hydration should be discussed with a qualified healthcare professional, dietitian, or coach, particularly for athletes with medical conditions. Individual needs, responses, and safety must always be considered.