Best way to get cardio in at home in this situation?

Anonymous
I want a way to tone up at home and I need some way to get a good cardio workout in. My problem is that I can't go to the gym, I can't really make a whole lot of noise ( like jumping, running in place) because I hate when other people know that I'm exercising. I think I'm going to start doing more simple things like standing instead of sitting, moving around, fidgeting etc. Any idea on how I can get some cardio in?
Best way to get cardio in at home in this situation?
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