“Body fat is structurally important,” explains Stefanie Mendez, R.D., co-founder of Matriarch, a women's fitness and nutrition service. “It cushions our organs and insulates our body for temperature control and also is our body’s source of energy reserves. Beyond that, fat is needed for the production of hormones and reproduction functions.” And that fat can show up in your thighs, your belly, and, yes, your upper arms. Where it goes is partly due to genetics; if your mom has arm fat, science says you have a 62 percent chance of inheriting that trait.
Flabby arms are something a lot of us have to tend to. If you find yourself buying a sweater or cardigan to go with your tank top or usually opt for the long-sleeved dress, then you’re not alone. Usually a result of genes, general excess fat or just ageing, it seems difficult to lose arm fat. The fat in our arms accumulates mainly around the triceps – the muscles on the back of your upper arm – and are prone to getting flabby if not exercised regularly.
Everyone's genetics are different. Your friend may hold more body fat in their glutes and thighs, while you may hold extra body fat in your arms or in your hips. We're all different. We're all unique little snowflakes and we hold our body fat in different areas. But, no matter who you are, if you get a low enough body fat composition, we guarantee you that you're going to lose body fat everywhere including your arms.
Exercise helps people to lose and maintain weight. An exercise session burns calories and elevates metabolic rate both during exercise and then for hours after exercise is completed. It helps to preserve and build lean muscle mass. It works to suppress appetite. All of these benefits work together to make exercise vital for maintaining weight loss.
Though some people actually love physical activity and look forward to it, for many of us, exercising is a mighty drag. Exercise has also had an added PR problem in recent years: A growing body of evidence has shown that it’s not all that good for weight loss, which was probably many people’s reason for doing it in the first place. It may help with weight a little, especially for maintenance, but by and large, if you want to drop pounds, the most effective way is to eat less, not necessarily to exercise more. That said, research in recent years has also illustrated quite persuasively what exercise is good for—and it is actually good for a number of things, including some very profound things, like reducing dementia risk. Here’s what science tells us we should probably keep exercising for, even though we may not love every minute of it.
Bend your knees to lower down into a split squat. Your left knee should ideally form a 90-degree angle so that your thigh is parallel to the ground, and your right knee is hovering above the floor. (Quick position check: your left foot should be stepped out far enough that you can do this without letting your left knee go past your left toes—if you can't, hop your left foot out a bit farther away from the bench.)
Then, step your left foot directly behind you (about 2 feet) and bend both knees to lower into a reverse lunge, creating two 90-degree angles with your legs. In this positioning, your shoulders should be directly above your hips and your chest should be upright (not leaning forward or back). Your right shin should be perpendicular to the floor and your right knee should be stacked above your right ankle. Your butt and core should be engaged.
Before anyone’s crowned Cap’n Crunch, remember form is key. Lie on your back with the knees bent and feet flat on the floor. With hands behind the head, place the chin down slightly and peel the head and shoulders off the mat while engaging the core. Continue curling up until the upper back is off the mat. Hold briefly, then lower the torso back toward the mat slowly.
For urban runners and power-walkers, one of the biggest obstacles is other people. It’s difficult to get in your meditative zone and enjoy your music when you constantly have to dodge people. To resolve this vexing issue, Runbell, a startup in Tokyo, has developed the runner’s version of the bicycle bell. With this lightweight brass bell warning people you’re approaching from behind, you’re free to maintain your transcendental state while continuing your workout. Head to their Kickstarter campaign to pledge your support.
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.
But the idea that banging out a workout when you don't have access to your usual equipment or space is one that trainers are quick to debunk. Sure, they know their way around a gym floor and a smart workout program, but they also know that when you're traveling, ultra busy, or just don't feel like dealing with the gym, a routine of challenging bodyweight exercises will get the job done.

Ever hit the hay after a long run or weight session at the gym? For some, a moderate workout can be the equivalent of a sleeping pill, even for people with insomnia Effects of moderate aerobic exercise training on chronic primary insomnia. Passos GS, Poyares D, Santana MG, D’Aurea CV, Youngstedt SD, Tufik S, de Mello MT. Department of Psychobiology, Universidade Federal de Sao Paulo, Sao Paulo, Brazil. Sleep Medicine. 2011 December;12(10):1018-27.. Moving around five to six hours before bedtime raises the body’s core temperature. When the body temp drops back to normal a few hours later, it signals the body that it’s time to sleep Effects of exercise on sleep. Youngstedt SD. Department of Exercise Science, Norman J. Arnold School of Public Health, University of South Carolina, Columbia, SC, USA. Clinical Sports Medicine. 2005 April;24(2):355-65..


Challenge yourself with 2-2-2 push ups. If you feel comfortable with tricep push ups, you may want to try a variation on tricep pushups. The “2-2-2” push ups refer to 3 sets of 2 push ups using different hand placements: narrow, regular, and wide. The narrow push ups will work your tricep muscles and the wide push ups will work your chest muscles.[3]
Previous studies from her lab have also shown that the exercise is linked to changes in the secretion of stress hormones like epinephrine (a.k.a. adrenaline) and norepinephrine. “Our work has shown that each moderate, relatively short exercise bout exerts regulatory/suppression effects over inflammatory activities of immune cells," says Hong, "and in order to maximize this ‘benefit,’ repeated and regular exercise is recommended. In fact, we have also found that higher physical fitness is associated with better regulation of inflammatory activities of immune cells through stress hormones even among obese individuals.”
Hello Cassey, could you please do a back challenge? I think we need something in order to target back fat and bra bulge. We’ve done almost every other muscle group, but not the back. You have said, and I agree, that girls tend to ignore the back as it’s more of a ‘guy thing’, but sculpting a stronger back will definitely help us pull off back-less dresses and remove bra bulge.
Challenge yourself with 2-2-2 push ups. If you feel comfortable with tricep push ups, you may want to try a variation on tricep pushups. The “2-2-2” push ups refer to 3 sets of 2 push ups using different hand placements: narrow, regular, and wide. The narrow push ups will work your tricep muscles and the wide push ups will work your chest muscles.[3]
Before we look at what we can do for reducing arm fat, let’s be sure to understand the most common misconception about weight loss that is still floating around out there: spot-reducing. Science says you can’t spot reduce body fat. That means you can’t pick a spot on your body and exercise the fat away. You see, you store fat cells all over your body. Where your fat cells happen to be more concentrated is often a genetic predisposition. Having more fat on your arms doesn’t mean you can lose the fat directly from your arms alone. It means you have to first lose body fat all over, and then work on specifically strengthening your arms to tone them the way you wish.

Now that those muscles are uncovered and ready to work on, it’ll be easier for you to see your progress, as the muscles will start to show up through the thinner layer of body fat. Arms are made up of two different muscles — the biceps in the front, and the triceps at the back. The main one to target when toning arms up is the tricep, but working out the bicep at the same time will lend your arms a more balanced structure.

“Push-ups are a great exercise that can be done regressively or progressively. Adding things like shoulder taps, mountain climbers, or even negatives are great ways to add more effectiveness to push-ups done without weight,” explained Septh. Similarly, Barajas mentioned a change simple as switching up your hand placements (wide, narrow, etc.) will work different parts of the muscles.

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