I started riding my exercise bike about two months ago and I struggled to get to three miles in twenty minutes, I was huffing and puffing like I'd just run up a hill with an albatross around my neck, now I can do six miles in thirty (one) minutes, which is actually a bit of an accomplishment for me. This isn't meant to be a brag, I know six miles in half an hour is pathetic, but for me it's an accomplishment, it's something I can take an (one) iota of pride in. Six miles is three hundred calories, that's not nothing! Also my back hurts and my butt is numb, but hopefully that will pass with time, too. I think I have bad biking posture. What are the ethical considerations for getting a fancy bike seat for a cheap WalMart brand exercise bike?