Many workout and fitness plans get derailed by some common mistakes and bad habits. Be careful to avoid the following mistakes.

Working out without a battle plan -- Some people walk into the gym and wing it -- with no sense of how well they're working out all their muscles, then wonder why they don't make progress. Write down a workout plan: Map out all your workouts to the set. Figure out your goals and set a plan to get there. Read books for ideas if you must, or take advantage of the trainers the gym makes available. They can advise you on proper form, the right machines for you, the frequency of your workouts and so much more.

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