If you want to force tiredness then do a few extra rounds or keep shorter breaks :D It's not rocket science...

I think this is something competitors in many places still miss out on actually - competition simulation sparring trainings. Go in. Do your regular warm up. Do a round, rest for 2 rounds, do another round, rest for another 2, do one more, go home.

Should be done for sure. This will also teach you how much of a warmup you will need in the comp venue, when already the first round you have to go hard in the gym too. (I need a more thorough one than most.)

This is why I always come to class late. lol

Totally agree. IMHO it's a waste of time to be doing something I can do at home by myself. I prefer to flow roll or drill techniques with a partner to warm up (i.e. something I can't do at home by myself).

Mat time is precious and should not be wasted. :)

As a purple belt and near kicking the ass of 50, I go into the corner of tbe gym..whilst everybody else runs around the mats..doing the same shite warm ups that have always been done. I do my own stretches and moves to open my hips and legs up..and stretch my lower back.. good to go in less than 10 mins.. I never seen the point of doing boot camp warm up..to then stop and do slow moving drill techniques..Its like braking a car suddenly from going 100mph to 10mph..you are all warmed up sweaty...heart pounding.. to doing arm bar drills with no resistance for 30 mins and you cool down over tbat period. You then do maybe 15 mins of full resistance rolling or specific sparring ..and you jump back suddenly from being cold at 10mph to 100mph full tilt.
I have picked up more injuries from the warm up scenarios than from rolling hard..especially shoulder and back twinges from this.. bollox to it.. FInd your corner and warm up specifically to your body and injury list.. the traditional warm up is outdated..and needs revising in most gyms..

My attitude is that you are paying for jiu jitsu, not for me to have you crawl across the mat and do push ups. I give everyone time to stretch, then we a 5 minute round where the guys can drill anything they want with their partner. Then their partner gets to drill on them for a round. They could flow roll, hell they can have a competition match if they want, but that is their time. I usually tell people they should drill what have been learning lately or if they want to try something they saw on YouTube.
That way each student controls their “warm up” and can make it as intensive as they want.

Good point

Patrick, do agree :)

Also a nice warmup drill is "sweep exchange" - A starts open seated guard B starts just standing as a dummy, A moves in and performs any sweep they want (they can also give short verbal directions e.g. "put one knee down" ). If the sweep ends in any other position for A than guard top, B also performs guard recovery/escape movements ASAP and then flows into their own sweep at their own pace. Rinse and repeat for 5-6 minutes. Coaches recommendations:
1) Pick sweeps that you don't have to actively think/remember/ask too (!) much about.
2) You can do any number of different sweeps you want BUT try having at least 2 and unless deliberately goofing around more than 4-5 different ones is overkill for 1 round.
3) Always try to value constant flow over varying speed (meaning do NOT perform one part of the movement explosively and then stop to think for half a second). Pick such an overall speed that you can keep it fairly constant.

You're welcome :)

I like what im seeing up here

I will always do 5 - 10 minutes of warm-up drills that are actually relative to grappling i.e. pummelling, standing up in closed guard, leg drags, bridge-to-turtle etc, and I will typically always include a few drills relevant to what we are covering. I think teachers who use push-ups, sit-ups etc to warm up are doing their students a disservice.

I used to teach classes that would last 1h30. 20min were warm ups (with as much movements to 1. warm people up, 2. expand the range of motion 3. most importantly practice the type of movements we would need to be able to do the techniques later on), 20 minutes showing techniques and drilling them. 12 min positional sparring around the position we just showed, 20-30 of normal sparring roughly. The remaining time was my margin of slacking off, taking into account late people, errors of students,...

It was simple, and I would adjust depending on the objectives but it worked out pretty well.

We do a quick basic warm up (jumping jacks, air squats, hip circuit, standing up in base) followed by Jiu Jitsu/Judo specific movements (hipping out, breakfalls, front rolls, etc.). One thing I have noticed a lot is that a large number of BJJ guys do not know how to properly breakfall or front roll. Even many purple and brown belts. Judo really emphasizes these techniques because they are essential to being able to practice throws, but this doesn't seem to have the same priority in many BJJ schools. Have any of you noticed this as well?