Don’t be afraid of weights. After all, muscle burns more calories than fat. Do you want to know how to lose arm fat? Start with dumbbells, says Dede Lagree, who has worked with Angel Elsa Hosk and is the owner and head trainer at Lagree Fitness Studio. For Lagree’s arm-toning workout, choose a pair of dumbbells that you can safely lift at least 20 times. But pick a weight that challenges you: Your arms should feel that 20th rep! Don’t have dumbbells? Substitute soup cans or water bottles, Lagree says. Check out all the great body changes you get from lifting.


The body uses both carbohydrates and fats as energy sources. But after consistent aerobic exercise training, the body gets better at burning fat, which requires a lot of oxygen to convert it into energy. “One of the benefits of exercise training is that our cardiovascular system gets stronger and better at delivering oxygen, so we are able to metabolize more fat as an energy source,” Hackney says. As a result, your fat cells—which produce the substances responsible for chronic low-grade inflammation—shrink, and so does inflammation.
That stubborn back-of-the-arm fat is some of the hardest to ditch, but making tricep presses part of your routine can help tone and tighten that area fast. While seated, extend a dumbbell over your head, holding it with both arms. Next, bend your elbows and bring the dumbbell behind you until it’s parallel with your shoulders, straighten your arms and lift the weight, and repeat.
HOW TO DO IT: Start in a high plank with your hands underneath your shoulders. Jump your feet outside your hands and drop into a deep squat position, pushing your knees out and keeping your feels flat on the floor while prying your chest open with your hands. Return to the starting position and repeat. For an added challenge, try moving both forward and backward.
Not feeling up to heavy lifting? Try doing more reps at a lower weight instead and you’ll be kissing that arm fat goodbye in no time. Researchers at Canada’s McMaster University studied a group of 20-something men over a 12-week period, with half the study subjects lifting heavy weight and doing low reps, and another group lifting lighter weights for higher reps. The Journal of Applied Physiology study found that both groups increased their strength and muscle size by approximately the same amount, so if you’re relatively new to lifting or don’t feel up to hitting the heavy weights just yet, don’t worry; lighter lifts will still help you ditch the fat while gaining muscle tone.
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