What does BOA mean in BJJ?

Related questions

1. Is BJJ better than wrestling?
2. Is it safe to choke someone out?
3. Do you have to wear a gi in Jiu Jitsu?
4. Is Brazilian Jiu Jitsu a good workout?
5. What's the difference between Jiu Jitsu and Brazilian Jiu Jitsu?
6. Is BJJ useful for self defense?
7. What does Brazilian Jiu Jitsu teach you?
8. Is Gracie Jiu Jitsu good self defense?
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2. #something
3. #today
4. #training
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6. #encourage
7. #jitsu
8. #teammates
9. #anyways
10. #sounds
11. #always
12. #meant
13. #brand
14. #their
15. #brazilian
16. #chick
17. #portuguese
18. #asked