If you talk with any wrestler or Judoka most would tell you that,
They rarely go live with anyone who isn't close to their same weight!
I know some high-level wrestlers and judoka and they would tell you that during their training they would always be paired up with someone who was close to the same weight when it came to live practice.
Sure, they may drill with someone who was smaller or bigger. But when it's time to go after each other, they keep the people close to the same weight. Why are they so specific about keeping the weights similar?
Because doing live takedowns with big weight differences can be dangerous!
But this is completely opposite to how most BJJ gyms do it.
On any given day, in just about any BJJ gym, it's common to see people of vastly different weights rolling hard against each other. A 150lbs person with a 250lbs person isn't uncommon.
Now, on the ground you've got to be careful with this kind of match up. But on the feet, this can be a recipe for a serious injury if the practitioners are both inexperienced!
And if you're the smaller grappler even if you don't get injured, you'll never develop the confidence to become skilled with takedowns since you'll never finish the takedown. Even if you have a good entry for a takedown you'll get countered and thrown around because when it comes down to it,
SIZE MATTERS WITH TAKEDOWNS!
The ground can neutralize this a little, but there's a reason weight classes exist in Wrestling and Judo and why they don't do Open Weight Class divisions.
And if you're a bigger person doing takedowns with a much smaller person don't think you're in the clear on this one!
Instead of getting smashed you'll be developing a false sense of security.
Sure, throwing around someone that's 80lbs lighter than you is easy! But what happens when the person is just as big and strong as you are? You'll be in for a rude awakening my friend.
That said, I'm going to share some details on my Wrestling for BJJ series, but keep this important idea in mind. . .
If you want to remove the fear of takedowns and get skilled with your stand up techniques. It starts with you cherry picking your partners according to weight.
You should only practice takedowns live with someone who's within 10-20(max) of your weight. Especially early on when you're learning and the risk of injury is at it's highest.
If you have training partners who are skilled and can roll smooth that's one thing. But if you're close to the same skill you'll never develop your takedown abilities against much larger or smaller training partners.
I know this goes against the normal training norms of BJJ, but it's for the best when it comes to takedowns. Now if you're a Black Belt you can make your own decisions. And if it's on the ground, again, it's a different situation.