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Are you exercising hard but just not seeing the results you'd hoped for? Ditch these nine moves that might not deliver -- and may even cause injury.

Most Effective Exercises Pictures Slideshow: Squats, Lunges, and More

Think you need a gym to get fit? Save your money and try WebMD's No-Gym Workout -- 15 challenging moves to help you get in great shape. http://on.webmd.com/MZ2dCU #webmdsweeps

7 Risky Exercises and Better Bets ... Man looking exhausted after workout

Do you know how many glasses of water you really need each day? Or how often to break for water while exercising? Test your hydration knowledge with this WebMD slideshow. #webmdsweeps http://on.webmd.com/MZ2dCU

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If you're up for a very tough workout that takes everything you've got, this high-intensity program may be right for you. Started by a former gymnast and gymnastics coach, CrossFit lets you pick from different “workouts of the day,” or WOD. You might run, row, or climb ropes and do lunges, squats, and other moves.

Count calories, log workouts, and slim down the low-effort way with WebMD's free Food & Fitness Planner:

Losing weight is hard, maintaining weight is hard, staying fat is hard; CHOOSE YOUR HARD.