You should definitely get back into lifting, but with your build I suggest focusing on cardio.
When you say you stopped lifting do you mean that you stopped lifting completely?
Lifting and strength training is really an important part of grappling, and I like to think that it's alot more important than the cardio, but that's not really true. If you're going to be training in BJJ, you should be getting alot strength training just from your training. Add a little bit of weight training on top of that, but focus mostly on cardio, which will help you lose fat and keep you toned.
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