I quit smoking 10 years ago and bought a new Huffy mountainbike to ride around the block to clear out my lungs. I still remember that first ride. I made it about 2 blocks and my legs locked up so bad I didn't think I was going to make it back. My wife said "Back already?" when I walked in the door. After that I just kept going a little further and further. Within 3 months that Huffy was making some awful squealing noises and I knew it was time to buy a real bike. Now I barely remember smoking or a time without a bike.