With New Year’s celebrations coming to an end, it is time to get back to our fitness routines to get back in shape. And a great way to begin is with the ‘plank a day’ challenge. Although the trend isn’t as popular as it used to be, the results remain remarkable even today. Back pain, which comes from lack of strength, poor posture due to slumped shoulders and overall weakness and fatigue, including shortness of breath could be some of the signs that indicate weak core strength. ALSO READ | From Alia Bhatt to Malaika Arora: Know the fitness workout that’s fast becoming B-Town’s favourite Doing a five-minute plank will not only help you lose weight, it will also add to your strength, balance and stamina. The core, composed of the upper and lower abdominals as well as the side, back, psoas and glutei muscles, provides a muscular framework that protects internal organs, aids movement and lends balance and stability to the whole body.