I was just doing my thing—diving down rabbit holes of research trying to figure out the best ways to preserve muscle, keep metabolism high, and actually burn fat where it counts. And what do I find? Weightlifting mice. Yeah, really. . .and I had to bring them to you.
Researchers built a mouse gym where the little guys had to lift a weighted lid to get to their food. (Honestly, maybe we should all earn dinner that way. Weighted lids for everyone! Or better yet, 10 body weight squats before and after dinner!)
So 2 groups of mice with identical diets. One group lifted weights, and the other group of mice ran on a treadmill. Here’s the study if you want to see it yourself. After eight weeks, both the running mice and the lifting mice handled sugar better BUT the lifters came out leaner, with less belly fat, stronger insulin signaling, and faster metabolisms. This is what all my clients want! Me, too.
Here’s the crazy part: the lifting alone rewired their metabolism to burn fat and use insulin the way our bodies are designed to do. We are not designed to be sedentary.
Even while eating a less-than-deal high -at diet the lifters had less visceral fat (the deep, dangerous kind) and less subcutaneous fat (the soft, pinchable kind) than the runners. Visceral fat is something I target frequently.
Bottom line: strength training wins for fat loss, blood sugar control, and metabolic health even if your diet isn’t perfect.
How can we apply this to our lives?
1️⃣ Lift weights (even light ones).
This is where the magic happens. Cardio burns calories while you’re doing it, but weight training keeps the burn going long after. Muscle tissue is metabolically active and it demands energy even at rest. What this means is the more you have, the more calories you burn 24/7. That’s why consistent lifters often notice they can eat more and stay leaner.
And no, you don’t have to go heavy. Bodyweight moves, resistance bands, or a set of dumbbells do the trick. TIP: if you are using lighter weights, just do the reps slower. Consistency and gradual challenge are what counts here.
2️⃣ Don’t live on the treadmill.
Cardio is great for heart health and stress relief, but it’s not your long-term fat-burning hero. First, it can spike cortisol and as a member of the Silver Generation, I don’t want more cortisol. Also, once you stop moving, the burn stops too. With strength training, your body keeps working. It is repairing, rebuilding, and burning energy long after you’re done. That means you’re still burning calories when you’re sitting in book club or binge watching the latest series.
3️⃣ Try “exercise snacks.”
This one’s a game changer, and it works well for my clients. Instead of one long, exhausting workout, do several short bursts throughout the day.
Studies show that 3–4 mini workouts – even just 10 minutes each – can deliver better results with less fatigue and fewer injuries. You’re less tired which usually means better form so less injury. You don’t get sweaty so you don’t need to change clothes. There are so many wins by doing it this way.
Try squats while your coffee brews, pushups between calls, or tricep dips before dinner. What I do is have dumbbells next to my work area and will stop every hour or 2 for my top 4 upper body exercises and do 10 reps of each one or 10 air squats and sometimes I add in 200 jumps on my rebounder. Movement snacks keep your metabolism humming and your energy steady all day. I’ve noticed a difference.
NOTE: For those curious: My top 4 upper body dumbbell exercises are overhead press, lateral raise, overhead extension tricep and very slow bicep curls (or hammer curls).
The takeaway:
If you want to get rid of belly fat, have more energy, and protect your metabolism then lift something heavy, skip the cardio marathons, and move often. Those mice proved it: strength training doesn’t just build muscle, it reprograms your body to burn fat more efficiently.
Your future self (and your mitochondria) will thank you.
Disclaimer: This content is for education and inspiration only, not medical advice. Always check with your healthcare provider before making health or fitness changes.
