Skin sagging, a slower metabolic rate, and muscle loss might result from rapid weight loss. To lessen these consequences, it's critical to speak with registered health practitioners who can help you prioritize a healthy diet and regular exercise regimen that works for your personal needs and goals.Skin sagging, a slower metabolic rate, and muscle loss might result from rapid weight loss. To lessen these consequences, it's critical to speak with registered health practitioners who can help you prioritize a healthy diet and regular exercise regimen that works for your personal needs and goals.