Planks are good for weight loss since they engage multiple muscle groups, thereby boosting calorie burn and promoting muscle toning. Here are nine plank variations that can help lose weight quickly. Planks are good for weight loss since they engage multiple muscle groups, thereby boosting calorie burn and promoting muscle toning. Here are nine plank variations that can help lose weight quickly. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle