Training your neck is super important for jiu-jitsu as it’s the most accessible (for your opponent) lever to your whole spine.
Good news is you can train it almost anywhere.
Strong neck -> strong spine -> more jiu-jitsu
https://blossom.primal.net/f3ca5ae84d3fa5c7b86b336aeebc40c7fc09d5849780da006b89ecdb12043c6c.mov