So I live in an apartment with someone below me and super squeaky floors. I'm currently low on funds and can't afford good shoes or a gym membership. I have been going for long walks...in flip flops...in winter (at least it's the Pacific Northwest and not back home in Minnesota). That's been working pretty well but it doesn't raise my heart rate too much and you just can't jog in flip flops. I do have some better shoes (well at least better than flip flops) however they've given me severe heel blisters and that's why I'm wearing the flip flops, at least until the blisters heal.
I would like to do some cardio in my apartment but I don't want to piss off my neighbor below, which isn't too hard to do (he's a jerk). Do you guys have any ideas?

