Been training jiu jitsu on and off for about a decade. I regularly experience lower back pain after rolling, especially if I performed an explosive bridge during rolling or attempt a single leg takedown from standing and my back is bent. Even one explosive bridge will cause lower back pain later.

I most definitely have an anterior tilting pelvis, tight glutes and hip flexors. I’ve been stretching my hip flexors for years now, aiming for half an hour of stretching each day. My right side hip is much tighter than the left side one. I even wonder whether I have scarring around the tighter hip, though I can't remember what might have caused such a thing. If money wasn't an issue, I'd get a MRI to see definitively what is going on.

Recently started stretching my glutes, also. In an effort not only to address the lower back pain but improve my ability to leg pummel. I stretch my glutes by sitting in various cross-legged positions. An issue that comes up is right knee (on the leg of the tighter hip) is prone to pain when sitting in cross-legged positions. This can't be a coincidence. I suspect tight tendons, muscles, ligaments or whatever are pulling on my right knee when sitting cross-legged, causing pain. So I don't stretch my right glutes as long as I'd want to, out of fear of injuring my right knee.

Recently I’ve been focused on engaging my glutes as often as I can to correct the tilting of my pelvis and that seems to be helping with the back pain, which tells me the anterior tilting pelvis is likely indeed one of the culprits. For example, before bridging, I’ll make sure my glutes are flexed and my pelvis is "tucked" and rotated such that the anterior tilt is as minimal as possible. This has been helping but the lower back pain is still there, more or less.

Anything I might be missing with respect to stretching? Maybe I'm totally wrong about what might be the issue?

Thanks all.

In honor of Marcelo competing again on Jan. 24, this video has a cool breakdown of his past achievements.

This tournament was an attempt by Rickson Gracie to change the BJJ rule set to make BJJ more palatable for the public.

Some highlights:

• 3 minute rounds.
• Pulling guard gives you -1 point, pass, mount, back mount etc. gives 1 point, sub attempt 3 points.
• Heel hooks allowed.
• Each weight class had 4 competitors and 3 matches.
• Competitors included Marcelo Garcia, Xande Ribeiro, Leonardo Viera, Jacare and Rafael Lovato Jr.

It would be really cool to see something like this format take off again after the huge success of CJI.

This week we're joined by Shawn Williams! Shawn is a black belt under Renzo Gracie, and is both a renowned competitor and teacher. In this episode, Shawn Williams explains his "closed loop" strategy for Jiu-Jitsu, wherein you're always advancing without compromising position.

DISCLAIMER: Jiu-Jitsu is not therapy, and is not a replacement for therapy.

I'm heading out to support some teammates at a Grappling Industries today. It's a round robin format in the group stage. One of the guys divisions starts at 5.20, and he has his last round robin match scheduled for 11.30 right now. They still have to do the semi final and final matches after that.

Pretty much the title. I've been training for 5 months, injured for 4 weeks in there - just came off of a 2wk recovery from a knee injury. I'm relatively young, 6ft 175lbs, in pretty decent shape.

But I overexert myself to the point of vomiting nearly every class. It's frustrating and embarassing.

I've started doing more cardio and have improved a lot in that regard, but it doesn't seem to help at all on the mats. Do I just need to do more cardio? Is there something nutrition-wise that could help? Open to any and all suggestions.

Edit: Thanks everyone for the advice. I will try 1) not try so hard and ask partners to help me with that, 2) advice to talk to my doctor - I have in the past and he wasn't much help - but it got me to do some research... some medication I'm on can cause hyponatremia, which can cause nausea and vomiting especially after exercise... so I'm going to try a saline solution before/during class and may report back if it works.

Edit 2: took a 3% hypertonic salt solution to class today and it seems to have worked. I asked a higher belt to really push me in a difficult roll after class to test it. Not certain yet, but seems to have fixed the vomiting