Weight Cutting For BJJ Competition: The Positives & Negatives

Weight Cutting For BJJ: The Positives & Negatives

Weight cutting has become a prominent practice within BJJ competition that was adopted from wrestling and Judo. It can give an athlete a competitive edge, but it also comes with health risks.

If you’re just getting into competing, you have likely mulled the idea of cutting weight for Jiu-Jitsu competitions. Before you make a decision, check out our lists of the positives and negatives of cutting weight below.

Positives of Weight Cutting(6 key benefits)

Size and Strength Advantage

Dropping 5–15 lbs can potentially give you a competitive advantage against lighter opponents while retaining muscle mass from your walking weight. A 180-lb athlete cutting to 168 lbs (middleweight) faces smaller frames, improving leverage in guard passing, takedowns, and submissions. 

Wrestlers, who transition to Jiu-Jitsu competition have experience in weight cutting commonly have a physical advantage over opponents who don’t cut weight.

Mental Edge and Confidence

Weight cutting can reinforce discipline and commitment in a competition. The years of doing weight cuts from a young age have the potential of building up your mental fortitude and giving you an extra drive when it’s time to compete.

Strategic Division Selection

Cutting opens lighter brackets with potentially weaker competition. For example, a natural 200-lb athlete cutting to 181 lbs (light heavyweight) avoids heavier opponents while staying dominant. This is especially valuable in gi divisions with tight weight limits.

Advantage on Day Before Competition Weigh-Ins

Competitions that hold weigh-ins a day before the competition give those with experience in weight cutting a huge advantage. This time allows them to recover from the cut and be near 100% for their matches.

Negatives of Weight Cutting

Performance Impairment

While the practice of weight cutting is used to give an athlete a performance edge, it can also have the opposite effect. Acute dehydration (>2% body weight) reduces aerobic capacity, grip strength, and reaction time. A 2016 study in Medicine & Science in Sports & Exercise found 4% dehydration cut anaerobic power by 10–15%—critical in explosive scrambles.

Health Risks

Extreme methods (diuretics, laxatives, plastic suits) cause kidney stress, electrolyte imbalance, and possibly rhabdomyolysis. There have been numerous cases of deaths due to extreme weight cuts in every combat sport. In Jiu-Jitsu, safety oversight is nonexistent, and athletes are putting their health at risk for a medal and no financial gain.

Recovery Delays

Post-cut rehydration takes 24–48 hours for full glycogen and hydration restoration. Same-day weigh-ins leave athletes depleted. The idea that an athlete will cut weight to have a physical advantage can often backfire horribly and put them at a disadvantage.

Muscle Catabolism

Calorie deficits to hit weight often sacrifice lean mass. For every 1 lb of glycogen-depleted muscle, ~3 lbs of water are lost—meaning a 10-lb cut may include 2–3 lbs of actual tissue if protein intake lags, which is often the case of competitions that do day of weigh-ins and even those that hold day before weigh-ins.

Injury Vulnerability

Weight cutting can not only leave you tired and depleted, but also leave your ligaments vulnerable. Dehydrated connective tissues and reduced neuromuscular control increase ACL, meniscus, and shoulder injury risk during dynamic movements. 

Weight Cycling Rebound

Repeated cuts lead to metabolic downregulation and fat regain. Long-term data on judo athletes (European Journal of Sport Science, 2019) show 5+ years of cycling increases body fat percentage by 4–7%.

(Mikey Musumeci hospitalized after an extreme weight cut)

Wrap Up

Weight cutting can possibly give an athlete a competitive edge, but there are health risks involved. If you’re just getting into competing and considering a weight cut, you will need to weigh the risks and decide if they are worth it.