What was that?! Sometimes a bike can be a very noisy machine. And, when it is, it's letting you know its bike parts need some attention. Stop and listen to your bicycle. Here are some common noises and solutions:
• If your seat clicks when you shift your weight, tighten the top of the seat post that holds the seat
• Water in the bearings of the bottom bracket will get loud over time, so have them repacked occasionally
• Noisy wheels? Look for loose spokes to tighten or check your tires for stuck debris
Regardless of whether you're riding with a rigid or suspension fork, if its noisy, take it to the shop for a check up.