Jimmy Mackey Profile picture
Sep 17, 2024 14 tweets 4 min read Read on X
Harsh truth:

Cardio is a stupid way to lose fat.

If you have 30 pounds of stubborn belly fat to lose by Christmas, read this: Image
Cardio doesn't burn as many calories as you think.

A 30-minute jog? About 300 calories. That's one cookie.

Plus, your body adapts quickly, making cardio less effective over time.
Excessive cardio can lead to muscle loss.

When you're in a calorie deficit, your body may break down muscle for energy.

This slows your metabolism, making fat loss even harder.
Cardio increases hunger.

Ever finish a run and feel ravenous?

This often leads to overeating, negating any calories burned.

Here's what you should do instead:
Calorie Deficit

A calorie deficit is when you consume fewer calories than you burn.

The best way to do this without counting calories is to simply increase physical activity.

Maximize fat loss by eating less sugars and high calorie junk foods.
Creating a calorie deficit works best with a diet that is:

• flexible — adapts to your lifestyle
• enjoyable — includes your favorite foods
• realistic — so you can stick to it for a long time

As you lose fat, you'll also need to recalculate calorie deficit targets.
Resistance Training

Lift weights 3-4 times per week.

Focus on compound movements like squats, deadlifts, and bench press.

Train to failure or near-failure to maximize muscle growth and fat loss. Image
Resistance training preserves muscle mass while in a calorie deficit.

More muscle = higher metabolism = easier fat loss.

Plus, you'll look better as the fat comes off. Image
Low-Intensity Cardio

High-intensity workouts aren't necessary.

Walking, swimming, cycling, and rowing are enough to burn extra calories without impacting recovery or increasing hunger.
Aim for 7,000-10,000 steps per day.

This burns calories, improves cardiovascular health, and doesn't interfere with muscle growth or recovery. Image
Diet Breaks

Implement periodic diet breaks every 4-6 weeks.

Eat at maintenance calories for 1-2 weeks.

This helps reset hormones, reduces diet fatigue, and makes the process more sustainable.
The bottom line:

Ditch the treadmill.

Focus on resistance training, low-intensity cardio, and a flexible diet.

This approach is more effective, sustainable, and enjoyable for long-term fat loss.
I hope you've found this thread helpful.

Follow me @thejimmymackey for more.

Like/Repost the quote below if you can:
P.S. I'm looking for a few more men who want to lose 20-30lbs of stubborn FAT & build a LEAN body this fall.

(no restrictive diets, 3 hrs required per week)

Interested?

DM me "fall," and let's chat. Image

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More from @thejimmymackey

Feb 10
Men in the 1960s drank, smoked, and at butter.

Men in 2026 "eat clean" and still have bellies hanging over their belts.

50 years ago only 13% of Americans were overweight or obese. Today that number is 75%.

What the hell happened? (a thread on how to fight back): Image
... modern life happened.

Food companies sold you garbage.
Gurus sold you fad diets.
Doctors sold you pills.

and what did that get us?

The average 40-year-old American is now overweight, testosterone levels of a 70-year-old and reliant on several medications.
When the system is sick, being healthy means stepping away from it.

And getting back to the basics.

Here’s how to fight back (save this):
Read 11 tweets
Jan 27
Running is a b*tch.
Especially if you’re overweight.

Sure, it’s good for your heart & lungs.
But it's time consuming and NOT optimal for fat loss.

Here’s the exact system I’d use to drop 30 pounds of fat WITHOUT endless running: Image
My client Zach HATES running.

He came to me at 228 lbs.
But he thought cardio was the entry fee to weight loss.

So he just... wasn't even trying to lose weight.

He couldn't have been more wrong.
Cardio is obviously great for heart health.
But if your goal is fat loss, it's a shitty strategy.

- makes you hungry & tired all the time
- only burns calories while you're doing it
- burns off WEIGHT (muscle AND fat), not just fat

You end up smaller, softer, weaker.
Read 14 tweets
Mar 13, 2025
Time to expose one of the biggest fitness lies:

“Carbs are making you fat!”

Read this if you want to lose weight AND build lean muscle (without restricting foods you love): Image
Carbs are NOT the enemy. But only if you know:

• What carbs to avoid
• Which ones to eat
• When to eat them

Let’s dive in:
Carbs are fuel for the brain and body.

• Your brain runs on glucose from carbs
• Your metabolism thrives when fueled properly
• Your muscles need glycogen from carbs for strength and recovery

Eliminate carbs completely, and you’ll feel weak, sluggish, and unfocused.
Read 12 tweets
Mar 10, 2025
Harsh truth:

Cardio is a stupid way to lose fat.

If you have 30-50 pounds of stubborn belly fat to lose by Summer, read this: Image
Cardio doesn't burn as many calories as you think.

A 30-minute jog? About 300 calories. That's one cookie.

Plus, your body adapts quickly, making cardio less effective over time.
Excessive cardio can lead to muscle loss.

When you're in a calorie deficit, your body may break down muscle for energy.

This slows your metabolism, making fat loss even harder.
Read 14 tweets
Feb 27, 2025
The most under-recognized yet dangerous health condition:

Insulin resistance.

It's why 38% of Americans have pre-diabetes and can't lose weight (no matter how hard they try).

5 ways to reverse it (and lose 30-50lbs of stubborn fat): Image
So what is this mysterious “Insulin Resistance?”

Insulin is a hormone that works like a key, putting sugar into your cells.

With insulin resistance, the key doesn’t fit right.

The sugar can't get into your cells, so it builds up in the blood. Image
This leads to chronic inflammation which causes fat gain, brain fog and constant fatigue.

And eventually, the 4 Horsemen of Chronic Disease:

1. Heart Disease
2. Alzheimers
3. Diabetes
4. Cancer
Read 15 tweets
Feb 25, 2025
Harsh truth:

You'll NEVER get a 6-pack doing crunches.

What's the secret? Dropping that stubborn 15-20 pounds.

So if you want to enter summer 2025 with a chiseled core...
Start these 7 simple fat-shredding hacks today: 🧵

1. Skip cardio... Image
Increase daily movement instead:

NEAT (Non-Exercise Activity Thermogenesis) burns up to 15% of your daily calories.

Standing burns 30% extra calories vs sitting.

10k steps = an extra 400 calories torched daily.

Combine this with lifting for ultimate results.
2. Lift weights

But don't lift to burn calories - do it to build muscle.

Why?

Just 3 sessions per week boosts your resting metabolism between 5-9%.

Your body becomes a fat-burning machine 24/7.
Read 11 tweets

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