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Strength

Fatloss

+1

4 numbers to write down today (your 90-day scorecard)

Nov 3, 2026

•

1 min read

4 numbers to write down today (your 90-day scorecard)

Jason @ Dad OS
Jason @ Dad OS

Strength

+1

30 seconds, twice a day, for cranky joints

Oct 29, 2026

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1 min read

30 seconds, twice a day, for cranky joints

Your tendons don't get stronger the way your muscles do.

Jason @ Dad OS
Jason @ Dad OS

Supplements

+2

Count for three days. Then quit counting.

Oct 20, 2026

•

1 min read

Count for three days. Then quit counting.

Most of you buy protein powder. Almost none of you know yesterday's number.

Jason @ Dad OS
Jason @ Dad OS

Strength

+1

Cardio isn't the enemy. The order is.

Oct 15, 2026

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1 min read

Cardio isn't the enemy. The order is.

Same workout, different order, very different result.

Jason @ Dad OS
Jason @ Dad OS

Nutrition

+2

For those of you who train zero days a week

Oct 13, 2026

•

1 min read

For those of you who train zero days a week

No judgment. Here's the two-week restart, and it's deliberately too easy.

Jason @ Dad OS
Jason @ Dad OS

Fatloss

+1

Losing fat or losing muscle? 3 questions tell you

Oct 8, 2026

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1 min read

Losing fat or losing muscle? 3 questions tell you

The scale can't tell the difference. These can.

Jason @ Dad OS
Jason @ Dad OS

Nutrition

+1

Your protein number in 30 seconds

Oct 6, 2026

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1 min read

Your protein number in 30 seconds

One number. No app. No math class.

Jason @ Dad OS
Jason @ Dad OS

Nutrition

+2

Nobody's handing you a program

Sep 29, 2026

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1 min read

Nobody's handing you a program

Three in ten of you said you don't know what to do. So here's one workout, run three times a week.

Jason @ Dad OS
Jason @ Dad OS

Nutrition

+2

The mirror is the goal. So measure it.

Sep 24, 2026

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2 min read

The mirror is the goal. So measure it.

Half of you told me the mirror is the point. Almost none of you are actually tracking it.

Jason @ Dad OS
Jason @ Dad OS

Strength

+2

Your shoulder isn't a reason to stop

Sep 22, 2026

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2 min read

Your shoulder isn't a reason to stop

Three in ten of you named pain as the thing in your way. Here's how to train around it.

Jason @ Dad OS
Jason @ Dad OS

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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ Dad OS

Nutrition

+3

Opening day: the entire 12-week fall program

Sep 10, 2026

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1 min read

Opening day: the entire 12-week fall program

Twelve clean weeks to Thanksgiving. Here's the whole plan, small enough to fit on a sticky note.

Jason @ Dad OS
Jason @ Dad OS

Nutrition

+2

Randy

Aug 27, 2026

•

2 min read

Randy

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

Jason @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ 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 @ Dad OS
Jason @ Dad OS

Nutrition

+1

The protein math that changes everything after 40

Jun 16, 2026

•

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 @ Dad OS
Jason @ 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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