The 40-minute Dad Bod Shred Workout Program

A four-week workout program promising to turn soft dads into lean machines sounds like every fitness gimmick you have ever ignored — but this one is worth a harder look before you dismiss it.

Quick Take

Trainer Cory Gregory built the Dad Bod Shred program around dumbbells, an adjustable bench, and 40 minutes a day — no gym required.
The program uses supersets and short rest periods to build muscle and burn fat at the same time, four days a week.
No peer-reviewed study has verified the four-week results, and the program’s schedule is described differently across sources.
The biggest question is not whether the workouts are solid — it is whether “best shape of your life” in four weeks is a promise or just a sales pitch.

What the Dad Bod Shred Program Actually Looks Like

Cory Gregory designed the program for fathers who have more excuses than time. The structure is straightforward: four days a week, roughly 40 minutes per session, weekends free. ^[3] You need dumbbells and an adjustable bench. That is it. No gym membership, no complicated machines, no commute. You can knock it out before the kids wake up or after they go to bed. Gregory built the whole thing around that reality.

The workouts use supersets, trisets, and circuits to keep your heart rate up while building muscle. Gregory also includes a Farmer’s Walk — carrying heavy dumbbells for distance — which blends strength and cardio in one move. ^[3] The circuit format on some versions runs one minute per exercise with a 30-second rest, keeping the focus on quality reps rather than grinding out numbers. ^[7] The goal is maximum output in minimum time, which is exactly what a tired dad needs.

The Real Risk for Dads Who Have Not Trained in Years

Supersets with short rest periods are an efficient way to train. They are also a fast track to injury for someone who has not lifted consistently in five years. Strength coaches who study high-intensity programming point out that form breaks down when fatigue builds faster than technique is established. ^[11] Gregory’s program claims reduced injury risk because it avoids extremely heavy weights. That logic holds for trained individuals. For a dad who last exercised during the Obama administration, the intensity may still exceed what his body is ready to handle without a proper foundation first.

None of this means the program is bad. It means it is probably better suited for fathers who are already somewhat active rather than complete beginners. The design is smart — short sessions, home-friendly equipment, built-in rest days, and training methods that science supports for building muscle efficiently. ^[16] The structure alone puts it ahead of most programs collecting dust on someone’s hard drive. The honest version of the promise is not “best shape of your life in four weeks.” It is “a well-designed starting point that will produce real results if you show up consistently and eat like an adult.”

What Would Make This Program Worth Trusting Completely

Gregory’s program is backed by Men’s Health and distributed through All Out Studio, both of which have financial skin in the game. ^[10] That does not make the program worthless, but it does mean the promotional claims have not been independently checked. No major fitness certification body — not the National Academy of Sports Medicine (NASM), not the American Council on Exercise (ACE) — has publicly reviewed or endorsed it. A randomized trial with real dads, real measurements before and after, and real follow-up data at six and twelve months would settle the debate. Until then, the program earns cautious optimism, not blind faith.