Do you want a flatter belly? Crunches can help strengthen and develop abdominal muscles. Just 15 to 30 minutes of this exercise every other day can make a tremendous difference! Just a few reminders: for best results, combine crunches with a good diet and cardio activity like running or a sport like badminton that gets your heart rate above 120 beats per minute. (Check the … [Read more...] about 9 Crunches that Blast Belly Fat