Hello all, I've had bad luck with my legs. Almost 30 but had 4 knee surgeries, doc said I can't do squats with weight. Hell when I squat on my own with no weight it's hard to get back up sometimes. So what can I do to not neglect my legs? I'm able to do cardio so I run quite a bit but I'm struggling with what to do for strength training for them. Don't wanna be the guy with a big upper body and chicken legs. Any tips would be appreciated!