I Tested 6 Compact Cardio Machines in My Tiny Apartment – Here’s Which Prime Day Deals Are Actually Worth It Let me tell you about the morning I realized my apartment gym wasn’t working out. There I was, staring at a treadmill that took up half my living room, collecting laundry because I couldn’t walk past it without tripping over a stack of magazines. I’d bought it during last year’s Prime Day frenzy, caught up in the hype of building a home gym, but the reality of living with a 300-pound machine in a 600-square-foot apartment had set in hard.…