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You want to know if jiu-jitsu is worth your evenings: will it get you fitter, calmer and more confident, and will you get hurt? Here is what published research actually measured, sport by sport, with every source linked at the bottom. The short answer comes first, then the details.
The short answer
- Jiu-jitsu works your whole body in short, hard bursts. In a review of 58 studies, strength, grip and endurance went with success [1].
- Across 14 studies, martial arts training gave a small lift in wellbeing and a medium drop in anxiety and low mood [2]. Adult-only research is still mixed [3].
- Practising real skills builds confidence: women who took a self-defence class felt more able to resist an attack a year later [5].
- Injuries happen, mostly in sparring: about 5.5 per 1,000 training hours [8]. Coached, controlled training lowers the risk.
No experience, no equipment. We can lend you a gi for the first 2 weeks.
What the studies found
| Study | Who | Sport | What they found |
|---|---|---|---|
| Review of 58 studies, 2017 | 1,496 BJJ athletes | Brazilian jiu-jitsu | Stop-and-go sport; low body fat; strength and grip go with success [1] |
| Meta-analysis of 14 studies, 2020 | Children, teens and adults | Various martial arts | Small lift in wellbeing, medium drop in anxiety and low mood [2] |
| Review of 72 studies, 2024 | Adults | Martial arts, combat sports | Mixed result: links with mental health were not consistent [3] |
| 10-week class, 2014 | University women | Self-defence (not BJJ) | More confident they could resist an attack a year later [5] |
| Pilot, no comparison group, 2019 | US service members and veterans | Brazilian jiu-jitsu | Fewer PTSD, depression and anxiety symptoms after five months [4] |
| Review of 10 trials, 2025 | Older adults | Adapted taekwondo, Muay Thai | Better everyday mobility; low certainty [7] |
| Survey of 881, review of 2,847, 2024 to 2025 | People who train BJJ | Brazilian jiu-jitsu | About 5.5 injuries per 1,000 training hours; knees and shoulders most [8] [9] |
What does jiu-jitsu ask of your body?
Short, hard bursts, again and again, with your grip, legs, core and lungs working together. A review of 58 studies covering 1,496 BJJ athletes describes this stop-and-go pattern, and links low body fat, strength, strength endurance and grip to success [1].
Those numbers come from trained athletes, mostly men and many of them competitors, so they are not a promise for beginners. They show you what the training asks for: rounds against a partner who moves. That is why so many adults who got bored at the gym stay on the mat.
Starting later is possible. A review of 10 trials found martial arts improved everyday mobility in older adults, with low certainty and no BJJ trials among them [7].
The adults who last start at their own pace and learn the fundamentals before they spar hard. Our guide to starting jiu-jitsu later in life covers the practical side.
Can training help with stress and mood?
The evidence leans positive. Across 14 studies, martial arts training gave a small lift in wellbeing and a medium drop in symptoms like anxiety and low mood [2]. The studies mixed children, teens and adults, and they varied a lot.
Adult-only research is less settled. A 2024 review of 72 studies found the links inconsistent, with the clearest results for perception and for stopping an impulse before acting [3]. Most of those studies compared people who already trained with people who did not, so they cannot prove cause.
Two smaller studies add clues. In a pilot with US service members and veterans, five months of BJJ (40 sessions) was followed by fewer PTSD, depression and anxiety symptoms, but there was no comparison group [4]. In a lab study of 68 Japanese jujitsu practitioners, oxytocin, a hormone tied to social bonding, rose after training, and more after ground grappling than after striking [6].
Jiu-jitsu is not a treatment. If you live with anxiety or depression, training can sit alongside care from a professional, not replace it.
Will it make me more confident?
Practising real skills against a real person tends to build confidence. Women who took a 10-week self-defence class felt more confident a year later that they could resist an attack [5]. That class was not BJJ, and the women chose to sign up, so the groups were not random.
Jiu-jitsu trains the same thing every class. You escape bad positions against a partner who resists, you tap when you are caught, and you start again. Over the months, "I hope I would know what to do" becomes "I have done this many times."
You do not need to be fit, flexible or tough to start: that comes from the training itself. Our article on self-defence for women through jiu-jitsu goes further.
How risky is it, honestly?
Injuries happen, mostly in sparring, and beginners are more exposed. A survey of 881 people who train at least weekly reported about 5.5 injuries per 1,000 training hours, with knees and shoulders affected most [8]. A review of seven studies covering 2,847 practitioners found the knee, chest and ribs, then the shoulder, most affected, and injuries more common in training, in beginners and in men over thirty [9].
Both relied on people reporting their own injuries, and many were competitors. The pattern is still clear enough to act on. Coached, controlled training lowers the risk: tap early and without ego, spar at a controlled pace while you learn, choose partners sensibly and let the coaches set the pace.
When are classes?
| Group | Weekdays | Saturday |
|---|---|---|
| Adults (14+) | Mon to Thu, 7:15 PM | 10:45 AM |
Classes start after work, so you can train on your way home. Kids train right after school: see the kids schedule. Parents can read our companion article on what research says about jiu-jitsu for kids, and for the practical side of getting fitter, see how jiu-jitsu changes your fitness at any age.
Your first class is free
Pick a class, come 10 minutes early, and we can lend you a gi for the first 2 weeks.
Book a free trialReady to join? Register online.
References
- Andreato LV, Diaz Lara FJ, Andrade A, Branco BHM (2017). Physical and Physiological Profiles of Brazilian Jiu-Jitsu Athletes: a Systematic Review. Sports Medicine - Open, 3:9. doi.org/10.1186/s40798-016-0069-5
- Moore B, Dudley D, Woodcock S (2020). The effect of martial arts training on mental health outcomes: A systematic review and meta-analysis. Journal of Bodywork and Movement Therapies, 24(4):402-412. doi.org/10.1016/j.jbmt.2020.06.017
- Ciaccioni S, Castro O, Bahrami F, et al. (2024). Martial arts, combat sports, and mental health in adults: A systematic review. Psychology of Sport and Exercise, 70:102556. doi.org/10.1016/j.psychsport.2023.102556
- Willing AE, Girling SA, Deichert R, et al. (2019). Brazilian Jiu Jitsu Training for US Service Members and Veterans with Symptoms of PTSD. Military Medicine, 184(11-12):e626-e631. doi.org/10.1093/milmed/usz074
- Hollander JA (2014). Does self-defense training prevent sexual violence against women? Violence Against Women, 20(3):252-269. doi.org/10.1177/1077801214526046
- Rassovsky Y, Harwood A, Zagoory-Sharon O, Feldman R (2019). Martial arts increase oxytocin production. Scientific Reports. doi.org/10.1038/s41598-019-49620-0
- de Mendonca DLC, Raider Junior JM, da Silva LBB, et al. (2025). Benefits of martial arts on the functional capacity of elderly people: a systematic review and meta-analysis. Clinics (Sao Paulo), 80:100830. doi.org/10.1016/j.clinsp.2025.100830
- Stegerhoek PM, Brajovic B, Kuijer P, Mehrab M (2025). Injury prevalence among Brazilian Jiu-Jitsu practitioners globally: a cross-sectional study in 881 participants. BMJ Open Sport & Exercise Medicine, 11(1):e002322. doi.org/10.1136/bmjsem-2024-002322
- Santos SP, Soares HHP, Perez Neto S, Caseiro Filho LC, Girasol CE (2024). Epidemiology of Injuries and Their Implications in Jiu-Jitsu Practitioners: An Integrative Systematic Review. Revista Brasileira de Ortopedia, 59(3):e364-e371. doi.org/10.1055/s-0044-1785662
This article summarises published research for general information. It is not medical advice. If you have a health condition or an injury, talk to your doctor before starting a new sport.