Why You’re Always Tired And Not Losing Fat Over 40
Apr 04, 2026
Why Energy Drops Over 40
Most people assume that being tired and gaining fat is just part of getting older, but that's not true. After coaching people for over 25 years, I've seen how simple lifestyle changes can dramatically improve energy. I'm going to show you the most common reasons energy drops after 40 and the practical steps you can take to start feeling strong and energetic again.
We had our daylight savings clock change not so long ago here in Toronto. My husband and I went out for dinner and a concert on Saturday night, so we stayed up a bit later and I definitely felt it on Monday. So yes, I had a couple of extra mugs of green tea and a little caffeinated chocolate to perk me up on Monday morning.
Sometimes we need these short term strategies to get us through the day. But what if you're always feeling tired? Many people over 40 feel like they don't have as much energy as they used to.
In reality, it's often gradual negative changes that start to add up over time. But here's the important part. Feeling constantly tired isn't an inevitable part of getting older. Most midlife fatigue can be dealt with through specific steps and habit changes.
You're Not Sleeping Well Enough
Before we look at anything else, we have to start with the biggest factor that affects your daily energy. You're not sleeping well enough. While there are some physiological reasons why sleep quality goes down with age, most sleep issues are treatable.
It starts with taking a look at your evening routine and your sleep environment. Are you having caffeine later in the afternoon or evening? Try to keep your caffeine intake to the morning or early afternoon, about 2:00 p.m., depending on when you go to sleep.
Are you eating large meals too close to bedtime within two hours? Nothing to do with fat loss, but lying down after large meals can result in acid reflux or digestive discomfort that interferes with sleep. I do have GERD acid reflux so I need three hours.
Are you watching TV, scrolling your phone or using your laptop in bed? Keep your bed for sleep and sex only. That way your brain associates the bed with rest and positive vibes.
Are you keeping your sleep wake schedule similar from day to day? Sometimes it's more important to your daily function that you keep a regular schedule than how many hours you actually sleep, although generally that should be at least seven hours. Is your bedroom dark, cool, and quiet?
Even small light sources can interfere with your body's production of melatonin, which already goes down as you get older. If you're doing everything right but you still don't sleep well, see your doctor for assessment or treatment. They can rule out sleep apnea or treat hormonal sleep issues like night sweats.
You're Moving Less Than You Think
Sleep isn't the only habit that quietly drains your energy. You're moving less than you think. When you're tired, you move less, and when you move less, you feel more tired.
It's a frustrating cycle that a lot of people over 40 are trapped in. Daily movement is one of the best ways to increase your energy. Sometimes you have to push yourself to move when you're not feeling energetic.
I always remind myself that I'll feel better afterwards. Aim for at least 7,000 steps per day and force yourself to get up from your desk every 30 minutes.
Your Nutrition Is Inconsistent
Another huge factor that many busy professionals overlook is how they're fueling their body throughout the day. Because your nutrition could be ruining your energy too. Many people go from restricting calories too much to overeating, often on the weekends.
That means you feel weak and tired on low calorie days and sluggish on higher calorie days. You should aim to fuel your body consistently with the right amount of calories for good workouts and your daily life. That doesn't mean you need to panic if you miss a meal once in a while.
But if your meals are all over the place, they're not giving you continuous energy. Make sure you're getting enough protein, at least 0.7 grams per pound of body weight per day or 1.6 grams per kilogram. Include healthy carbs to fuel your workouts.
Carnivore and keto are popular right now, but they're not ideal for most active people over 40 who are trying to lose fat and build lean muscle.
You're Losing Muscle
There's another major biological change that happens after 40 that most people don't think about. You're losing muscle. If you're not strength training, research shows you'll lose roughly 0.8 to 1% of your muscle mass each year starting around 40.
Muscle tissue is metabolically active, which means it plays a major role in how much energy your body produces and how efficiently it uses fuel. When muscle declines, metabolism can drop and everyday activities feel harder.
Do progressive resistance training at least two times per week. I've recently started doing three full body workouts per week instead of a body part split and I'm really enjoying it so far.
Recovery Is the Missing Piece
There's one piece that ties all of these habits together. Recovery. Recovery is often the part that most people miss.
If you're not sleeping enough, you don't recover as well. When you don't eat the right quantity and quality of food consistently, you don't recover from workouts or daily stress. If you don't give yourself enough time between workouts, your muscles don't recover and you don't grow as well.
When you don't deal with stress properly, everything else suffers. That includes your career, family, and health. Low energy over 40 isn't caused by a single issue.
It's usually a combination of poor sleep, less movement, inconsistent nutrition, muscle loss, and lack of recovery. Put these pieces together consistently and you'll see your energy return surprisingly quickly.
Develop Your Own Fat Loss System
For a simple system that helps busy people over 40 build lean muscle and lose fat without restrictive diets or excessive gym time, watch THIS VIDEO where I show you how to do it.