Answer:
Muscle
Step-by-step explanation:
During a weight loss regimen it is very important to loose body fat and gain muscle.
Muscle is a soft tissue in the body. During a weight loss regimen, a person may weigh the same after losing body fat and this is because muscle is heavier than fat but it gives the body shape and strength. Gaining muscle helps to reduce a person's overall body fat percentage. It keeps a person very fit and very flexible.