4. You're only doing cardio.

4. You're only doing cardio. Yes, cardio is important for calorie burning, but a proper exercise plan includes cardio, strength training and flexibility. If you're just doing cardio, then you will be burning calories and strengthening your cardiovascular system, but you won't be really changing your body composition by building more muscle. For that you need strength training!

Get-Results Remedy: Lift weights or do body-weight exercises, such as lunges and push-ups, at least twice a week to reap the amazing benefits of resistance training; including decreased body fat, increased muscle mass and stronger bone density. For hardcore cardio fans, you can also try kettlebell training or circuit training, which is like getting a strength and cardio workout at the same time!