I'm returning from a knee injury 6kgs/13pounds heavier and I'm gassing very fast. Judo training, as slow as I'm taking is a fooking nightmare. I'm not only gassing fast but I'm completely out shape, slow and not explosive. I definitely need to lose fat and become more athletic, had my sensei telling me that even before the injury! I usually just train for strength (5x5) and run for cardio however my knee is not ready for runs and I don't think I should just lift. A friend of mine recommended this gym where they train small groups and work with things like weight sled, medicine balls, ropes, core work, and the big 3 (high reps, one a day ). They also focus on condition and mobility but not on the same day. They train a lot of athletes there, so I guess they know what they are doing. I think this is exactly what I need but I still have my doubts. What do you guys think? If I start doing it should I work on the 3 main separately or just focus on this for a few months? And what about judo, could I do this in the morning and train at night?