I’m Doing Everything Right So Why Is My Metabolism Still Slow?
15 Dec 2025 · 6 min
Brittany asks why her metabolism is slow despite doing everything right. JJ Virgin covers thyroid testing (TSH, free T3, free T4, reverse T3, antibodies), muscle mass from resistance training, NEAT, protein intake, and hydration as the key factors that actually move your metabolic rate.
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So when I hear this question, I'm wondering what your indicators are. When you say that it is because you can't lose weight and is it because you're not energetic? Like what is going on that's making you think that your metabolism is slow? Because really the only way to know how your metabolism is really working. Or one of the ways is to do something called a bod pod where you get into this bod pod and it's going to test what your metabolism how many calories you're really using when you are at rest, right? So then you can tell, hey, if my calorie intake is lower than it should be at rest, I've got a slow metabolism. Now there are a couple things that really are going to impact your metabolism. So a lot of this thankfully is really under our control. The first thing that you've got to check on with your metabolism is my thyroid working well, not is my thyroid in the range that the lab test says because that may mean that you're low thyroid, but is my thyroid working well? So you want to check your thyroid numbers, your TSH or free T3 and T4, and if, if those things are not looking quite right, dig deeper into free teeth or into reverse T3 and thyroid antibodies and work with someone who really understands the subtleties of thyroid disease and how to optimize. Because if your thyroid's not working, you're not going to have a great metabolism and you're also not going to be able to do the second thing that's key important in your metabolism and that is hold on to or build muscle. I'm a big proponent of using a scale not to tell your overall weight, but to get on the scale to see what your weight is made up of. I find that for so many people it's not that they're overweight it's that they're under muscled and muscle is your metabolic spanx. It holds everything in tighter and everything, it supports a great metabolism because muscle requires more energy to be on your body. And muscle also after a workout requires more energy to get repaired to do something called muscle protein synthesis. So we have two ways to look at metabolism. What's your basal metabolic rate, what's your metabolic rate at rest, and then what can we do throughout the day to kick it up? And one of the things we can do throughout the day is to move more. Now there's exercise, but there's also something called non exercise activity thermogenesis that is fidgeting. And what they found is that people who are leaner tend to just move more. They fidget, they move around. And so this is where if you're not a fidgeter, if your neat's low, this is where something like an Apple watch or a Garmin or something that just kind of alerts you and says move, stand up, move around, get moving can be super helpful. I try to make sure that if I'm at an event, which is where you're, you know, where we have to sit and listen to something that I'm like in the back moving around, fidgeting, et cetera, I'm not just sitting on my tush, right? So that's one thing. Now of course, exercise that really help, that requires recovery. So walking is great, we should all move more. But that doesn't really require recovery. Like your body doesn't go, holy smokes, you just walked down the block. I'm out to do a lot of work here to repair that. But if you go to a gym and you work out hard and lift heavy weights, your body's got some recovery to do. It's got to repair, replace the oxygen debt, it's got to do muscle protein synthesis. And this is costly, it's metabolically costly. And we want that. Then the final thing is digestion requires energy and specifically protein requires more energy to digest than fat or carbohydrates, 20 to 30% more. So again, I always like people to build their diet protein first and then the non starchy vegetables come in, then the healthy fats and then we see what else you might need. But protein comes first. And then one other thing I've got to mention is making sure that you've got good water intake so that you, you know, you can raise stress hormones if you don't have enough fluid. And drinking more water can boost your metabolism. So those are some simple things that you can do. And again, bigger question is if you believe your metabolism is slow, what's the evidence? Is that like you've done a bod pod, or is it because you feel like you just can't lose weight? And then let's really address the situation at hand. Those things I just told you, though, are great starting points, so let me know how it goes. This is JJ with Ask the Health Expert. I answer your questions weekly, plus I interview the top experts in health and wellness. So make sure you you never miss a show by going to subscribetoj.com yep, it's that easy. I'll see you next time.
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