Recently, my knee had a flare up and I haven’t been able to do much cardio as I’d like. Since summer is on the way, I’m maintaining which usually includes at least one cardio session per week. If you’re new around here, you can read about my knee troubles here. After four weeks, I’m able to do squats and dead lifts again, but cardio stills tends irritate my knee because of the repetitive motion. I decided to get a little creative this past week and put together this at-home HIIT circuit I can easily do in my living room and that wouldn’t bother my knee. I also wanted a workout…