With gas prices so high, why not buy a bike? But before you head out to buy one, there are a few mistakes you want to avoid. Marcie Fraser explains.

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You see them in garages and yards sales: old bikes. They’re probably affordable, but are they a good idea to buy? That all depends.

"Depending on what you want to get out of that bike, a lot of older bikes are worth while putting money into, but usually the bigger question would cause somebody not to fix up an old bike is whether or not that bike is appropriate for what they want to do,” said Bob Priestley, Blue Sky Bike expert.

Before buying any bike, know what type of cycling you want to do. If it’s long distance, you are looking at a road bike and it must be the right fit to your body. But for a more causal rider, for example, on a touring bike, the fit is not as critical. A hybrid bike offers versatility on various terrains.

"Hybrid bike that will have some features that will allow you to do road, somewhat efficient off road, and somewhat effective, but causal riding and you can explore a bit," said Priestley.

A mountain bike is for the off road adventurer. Touring or hybrid can be the most comfortable, and your body position does matter. For example, the degree of leg extension.

When riding keep your elbows bent.

"If you are riding with your elbows completely locked out, every time you hit a bump, all those forces, all those vibrations are going to be transmitted up through your arm into your shoulder,” said Priestley.

Increase your comfort on your bike ride with comfy gloves, a cushy seat, and a helmet fit by an expert.

"The helmet should fit snug on head, put it on your head you should be consistent around your head," said Priestley.

If you choose to buy your bike at a department store, you may save money but you won't have the luxury of getting professionally fit to the bike.