BJJ · IBJJF competition prep
BJJ weight cut protocol
Structured, week-by-week weight management for Brazilian jiu-jitsu athletes. Enter your current weight, IBJJF division, and competition date — Maken builds a cut plan that protects your endurance and your grip through fight day.
Build my BJJ cut plan →IBJJF adult male divisions
Female and Masters divisions follow different weight brackets. Verify your division limits at ibjjf.com before your event.
How to cut weight for BJJ
01
Plan for same-day weigh-ins
Most IBJJF events run weigh-in immediately before your bracket. Unlike judo, there is no overnight window to rehydrate. This makes large water cuts dangerous — plan to walk into weigh-in at or very close to your division limit.
02
Protect your gas tank
BJJ matches can run 5–10 minutes with minimal recovery between rounds. Significant caloric restriction impairs aerobic capacity and glycolytic output more than it affects any other performance quality. Keep deficits modest and carbohydrate intake high around training.
03
Time your cut to the competition season
Start a long, slow cut 12–16 weeks before your most important event. Use smaller tune-up competitions in the interim to calibrate your approach without sacrificing preparation quality.
04
Strength and grip matter more than the scale
If you are debating between two divisions, choose the heavier one. BJJ rewards positional strength and grip endurance — competing drained in a lower division rarely produces better results than competing recovered in the division above.
Safety limits
Maken will not generate a cut plan if the required cut exceeds 5% of your body weight in fewer than 14 days. Cuts beyond this threshold carry serious health risks and are incompatible with the performance demands of a BJJ competition. If your situation falls outside these limits, the tool will tell you clearly and suggest a safer division.
Frequently asked questions
How much weight can I safely cut in 8 weeks for BJJ?
Over an 8-week period, most BJJ competitors can safely lose 4-6 kg of actual body mass through controlled dieting. Because IBJJF tournaments use same-day weigh-ins, large water cuts are not an option — you need to be close to your division limit when you step on the scale. Plan for 0.5-0.75 kg per week of fat loss. If you need to drop more than 6 kg, either start your cut earlier or compete in the next division up.
Should I compete in a higher BJJ division?
If your walk-around weight is more than 5-6 kg above your target IBJJF division, competing one weight class higher is almost always the better choice. BJJ matches can last 10 minutes with minimal rest between rounds, and dehydration severely degrades the aerobic endurance and grip strength that determine outcomes on the mat. A well-fueled athlete in a heavier bracket outperforms a drained athlete in a lighter one in the vast majority of cases.
What should I eat during competition week in BJJ?
In the week before an IBJJF event, keep meals clean and low-sodium: lean protein, white rice, sweet potatoes, and cooked vegetables. Maintain moderate carbohydrate intake to fuel rolling sessions early in the week. In the final 2-3 days, reduce portions gradually and cut sodium to minimize water retention. On competition morning, eat a light, carb-focused meal 2-3 hours before your bracket — a banana with rice or a small bowl of oatmeal works well. Avoid heavy fats and fibre that slow digestion.
How do I rehydrate after a BJJ weigh-in?
Since IBJJF weigh-ins happen immediately before your bracket, your rehydration window is very short — sometimes only 30-60 minutes. Sip 300-500 ml of an electrolyte drink between weigh-in and your first match. Do not chug large volumes, as this causes bloating and stomach discomfort during guard play. If you followed a conservative cut and are close to your natural weight at weigh-in, minimal rehydration is needed. The best strategy is to arrive at weigh-in already hydrated enough to compete.
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