Looking for people who have had knee dramas and subsequent rehab experience.

Ended up with a Stage 1 MCL strain during BJJ, nothing too major, but considering I've never had any knee issues at all, this gave me a bit of a scare, physio said I should be good to go in a couple weeks.

Anyone recommend weight / bodyweight strengthening exercises that focus on the muscles that promote knee stability? I'd like to TRY and ensure this is the one and only knee issue I have.

Google has turned up calf raises and leg extensions

Physio has said no squats for a couple weeks either, but will definitely hit the front squats when I get some confidence in the knee.

What about body weight exercises?

I'm looking to ease into them after a week or so, depending on how it all feels.