Neck fat can amass under the chin, on the sides, or in the jowls. Getting rid of this overweight isn’t as straightforward as doing neck exercises, although these kinds of activities can help reduce the appearance of fat. Fat oxidation — burning of fat in the body — does not necessarily happen at the spot you’re targeting. Because of this, you must take a full-body fat-loss approach. This includes targeting the neck part to help strengthen the muscles, eating the right nourishment, and exercising most days of the week.
Cutting Calories

Cut calories, you’ll notice your chin and neck part begin to tighten up over weeks.
Cutting unnecessary calories from your diet can decrease your total regular caloric intake significantly in many cases. For instance, a single twenty-ounce soda can contain 250 or more calories. Drinking the equal of 2 of these per day adds 500 calories to your everyday intake. That’s equivalent to using one pound of body fat per week. As you cut calories, you’ll notice your chin and neck part begin to tighten up over weeks. Avoid sugary foods and juices, fatty cuts of meat, and high-calorie snacks.
Neck Exercises

Tilt your head sideways, forward and backward, while using gentle resistance with your hand.
It can help firm and tone the muscles in your neck. Tilt your head sideways, forward and backward, while using gentle resistance with your hand. Doing up to 10 repetitions three times per day is an effective method to strengthen these muscles, according to the University of Maryland. It’s important to know that neck exercises will not directly burn overweight from your neck, but they can help to increase the concentration of muscle tissue in part. Muscle burns calories more efficiently than fatty tissue.
Eating Nutrient-dense Foods
For your body to work at optimal levels, it’s critical to eat healthfully. Getting enough vitamins and nutrients in your diet aids, you lose weight in several methods. A healthy diet can support the release of hormones related to fat storage and metabolic rate. For instance, starving yourself to lose weight puts your body into fat-storage mode. However, a diet rich in whole grains, vegetables, lean proteins, and low-fat dairy can boost your metabolic rate and energy levels. Your diet plays the most significant role in losing your neck fat.
Open and Close Your Mouth

Open and Close Your Mouth
Start by standing or sitting upright with the best posture. Then tilt your head back as far as likely. With your neck fully stretched back, open, and closed your mouth repeatedly, but do is gradual. You should feel the muscle in your throat part stretch every time you open or close your mouth. Redo this several times every time you exercise to get the full benefits.
Sit upright with good posture. Tilt your head back as far as possible. With your neck fully stretched back, open and shut mouth repeatedly, but do is slowly.
You should feel the muscle in your throat area stretch every time you open or close your mouth.
Repeat this; you exercise to get the full benefits.
Sticking Out Your Tongue
While sticking out your tongue may seem rude, it’s an excellent method to stretch out your neck and chin muscles. Stand with the best posture and hold your head at its natural angle. Open your mouth as extensive as you can and then stick out your tongue as far as it will go. Hold your tongue out in this position for ten seconds and then relax everything. If you can, do this ten times. If you can only do it a few times, work on it until you build up to ten.

Sticking Out Your Tongue
Your tongue may look silly, but it’ll be an effective method to work those chin muscles.
Source used
http://www.enformy.com/blog/double-chin-exercises-to-lose-chin-fat.php
Updated on 12/29/2019