By eHow Sports & Fitness Editor
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Push-ups are a great upper body exercise. They help tone your chest, upper back, shoulders and arms. Doing 20 or even 50 push-ups may be a fitness goal for some people. However if you are looking for a challenge, set a goal of doing 1,000 push-ups. It may not be easy, but with practice, conditioning and discipline it can be done.
eHow Sports & Fitness Editor