As for a purchase I wish I could take back? There was a phase a good few years ago because I was really into those fitness infomercials at 3 AM when I couldn't sleep, and I went all-in on this ab roller thing that swore it would give me a six-pack in two weeks. I used that thing like twice. It was way harder than they showed on TV and now it is sitting at the back corner of my closet collecting dust. I would have been better off just doing planks like my trainer told me or using that money to buy some actually good takeout which would have made me more satisfied.
