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Strength

Strength

+1

Does Cardio Burn Muscle? What Actually Eats Your Gains After 40

Sep 10, 2026

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2 min read

Does Cardio Burn Muscle? What Actually Eats Your Gains After 40

Cardio isn't the thief. Here's what is, and how much cardio you can do without losing a pound of muscle.

Jason from Dad OS
Jason from Dad OS

Strength

+1

Should I Do Cardio or Weights First? (The Answer After 40)

Sep 10, 2026

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2 min read

Should I Do Cardio or Weights First? (The Answer After 40)

The order that protects your strength, the one exception, and 3 ways to fit both into a dad schedule.

Jason from Dad OS
Jason from Dad OS

Fatloss

+1

How to Get Rid of Dad Bod (Without Living at the Gym)

Sep 10, 2026

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2 min read

How to Get Rid of Dad Bod (Without Living at the Gym)

It crept in one leftover chicken nugget at a time. Here's how to walk it back.

Jason from Dad OS
Jason from Dad OS

Fatloss

+1

How to Lose Love Handles After 40 (Side Crunches Won't Do It)

Sep 10, 2026

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2 min read

How to Lose Love Handles After 40 (Side Crunches Won't Do It)

Why the side fat is the last to leave, and the plan that finally shows it the door.

Jason from Dad OS
Jason from Dad OS

Fatloss

+1

Losing Inches But Not Weight? Here's What's Actually Happening

Sep 10, 2026

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2 min read

Losing Inches But Not Weight? Here's What's Actually Happening

The scale stalled. Your belt didn't. Here's why that's a win.

Jason from Dad OS
Jason from Dad OS

Nutrition

+1

How Much Protein Do You Need to Maintain Muscle After 40?

Sep 10, 2026

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2 min read

How Much Protein Do You Need to Maintain Muscle After 40?

The floor you never go under, even on the weeks when life wins.

Jason from Dad OS
Jason from Dad OS

Nutrition

+1

How Much Protein Do I Need to Build Muscle After 40?

Sep 10, 2026

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2 min read

How Much Protein Do I Need to Build Muscle After 40?

The daily number, the per-meal number, and why the rules changed when you hit 40.

Jason from Dad OS
Jason from Dad OS

Nutrition

+1

How Much Protein Does a 200 lb Man Need?

Sep 10, 2026

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3 min read

How Much Protein Does a 200 lb Man Need?

The real number for dads over 40, why it's higher than you think, and what 200 grams looks like on a plate.

Jason from Dad OS
Jason from Dad OS

Nutrition

+2

Randy

Aug 27, 2026

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2 min read

Randy

54, night shift at four hospitals, down 100 pounds. His whole system fits in three moves.

Jason from Dad OS
Jason from Dad OS

Nutrition

+2

The midsummer recomp check: are you losing fat or just weight?

Jul 28, 2026

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1 min read

The midsummer recomp check: are you losing fat or just weight?

Down 8 pounds doesn’t mean down 8 pounds of fat. Here’s how to tell what you actually lost.

Jason from Dad OS
Jason from Dad OS

Nutrition

+3

The 3 numbers that matter for fat loss after 40 (and none of them is weight)

Jul 21, 2026

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1 min read

The 3 numbers that matter for fat loss after 40 (and none of them is weight)

Stop weighing yourself. Start tracking these instead.

Jason from Dad OS
Jason from Dad OS

Fatloss

+2

The cardio mistake costing you 6 hours a week (and zero new muscle)

Jul 14, 2026

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2 min read

The cardio mistake costing you 6 hours a week (and zero new muscle)

After 40, walking burns the fat — but only strength training keeps the muscle. Here’s the add.

Jason from Dad OS
Jason from Dad OS

Strength

+1

The 30-minute recomp window: fit it between the kids and the calendar

Jun 23, 2026

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1 min read

The 30-minute recomp window: fit it between the kids and the calendar

Three 30-minute lifts beat one 90-minute weekend grind. Here’s where to find the time.

Jason from Dad OS
Jason from Dad OS

Nutrition

+1

The protein math that changes everything after 40

Jun 16, 2026

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2 min read

The protein math that changes everything after 40

Most dads over 40 are 40 grams short. Here’s the per-meal math that fixes it.

Jason from Dad OS
Jason from Dad OS

Fatloss

+2

[Bonus] Your Saturday already counts. You just aren’t getting credit for it.

Apr 23, 2026

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1 min read

[Bonus] Your Saturday already counts. You just aren’t getting credit for it.

Why weekend yard work counts as a real workout — and the Harvard study that proves it.

Jason from Dad OS
Jason from Dad OS

Nutrition

+2

The muscle you’re losing right now (and don’t even notice)

Mar 31, 2026

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2 min read

The muscle you’re losing right now (and don’t even notice)

After 40, you lose ~1% of muscle per year. Here’s the 3-move resistance plan to reverse it.

Jason from Dad OS
Jason from Dad OS

Longevity

+1

The one number that predicts how long you'll live (it's not your weight)

Mar 18, 2026

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2 min read

The one number that predicts how long you'll live (it's not your weight)

Your grip is telling you something. Are you listening?

Jason from Dad OS
Jason from Dad OS

// Dad OS //
Dads over 40 are losing energy, muscle, and time. Not you. Dad OS — one cheat code. 300 words. Every Tuesday.


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