BJJ nutrition for adults is mostly a timing problem. Classes run at 6 or 7 pm, you have worked all day, and you either roll on an empty tank or with dinner still sitting in your stomach. Here is the simple plan we give grapplers at our Samford gym.
Before class: the 3 pm snack
Eat a proper snack two to three hours before class: something with carbohydrate and a little protein. Yoghurt and fruit, a sandwich, or rice and leftover chicken all work. Then nothing heavy in the last hour. Our pre workout snack guide has more options.
After class: dinner still counts
Late dinner is fine. Make it a normal meal with a palm or two of protein, some carbohydrate and vegetables. Skipping it to “stay light” is the most common mistake we see, and it shows up as poor sleep and slow recovery.
BJJ nutrition and protein
Most grapplers over 35 under-eat protein. A practical target is around 1.6 g per kilogram of body weight a day, spread across three or four meals. For an 85 kg person that is about 135 g. Track it for three days before changing anything.
| Meal | Example | Approximate protein |
|---|---|---|
| Breakfast | 3 eggs, toast, Greek yoghurt | 35 g |
| Lunch | Chicken and rice bowl | 40 g |
| 3 pm snack | Tuna and crackers, fruit | 25 g |
| Dinner | Steak or fish, potato, vegetables | 40 g |
Hydration on the mat
A gi session in a Queensland summer can cost a litre or more of fluid. Weigh yourself before and after a hard class once or twice. Every kilogram lost is roughly a litre to replace over the evening.
What about supplements?
Food first, always. Once the basics are in place, a short list added one at a time makes sense. Propel Health Australia has written up the order a coach would use in their guide to the best supplements for BJJ. Add one product every few weeks so you know what each one is doing.
Common questions
Should I train on an empty stomach?
We do not recommend it for evening classes. After a full workday you will roll better, and recover better, with a proper snack in the afternoon.
Is it bad to eat late after class?
No. Eating a normal dinner after a late class helps recovery and sleep for most people. Keep it simple and avoid a very large or very fatty meal right before bed.
Do I need sports drinks?
For a normal one-hour class, water is enough for most people. For long open mats, comps or hot days, a drink with some sodium can help.
When to get it checked
If your weight is dropping without you meaning it to, feeling flat for weeks, or cramping regularly in class, look at the whole picture with a professional. An exercise physiologist can review training load alongside a dietitian’s input on food.