Lose the dad bod. Build strength. Lead your family well.
Online fitness coaching for busy dads & professionals.
Custom training, personal nutrition, and weekly accountability — built around your busy schedule. No 2-hour gym sessions. No guessing. Just a plan that fits your life and a coach who makes sure you follow through.
Free 1-on-1 call with Derek. No pressure — just a clear next step.
60+
active clients coached 1-on-1 online
100+ lbs
lost by couples together — in a single year
Set free
men walking free from addiction
10+ years
coaching · NASM certified · B.S. Exercise Science
Watch First
See how DMF coaching works
Before you book anything, hear it straight from Derek — who this is for, how the coaching works, and what happens on your Discovery Call.
Watch: the DMF training overview
Who This Is For
You take care of everyone else. Who's holding you accountable?
You're a busy dad or professional. Work is demanding, the family needs you, and somewhere along the way you let yourself go. You don't need another generic program — you need a plan built for your life and someone in your corner making sure it happens.
✕The gut keeps growing and your energy is gone by mid-afternoon.
✕You start strong every Monday and fall off by Thursday.
✕You know what to do — you just don't do it consistently.
✕Your kids deserve a dad who's strong, present, and leading — not exhausted and checked out.
Who you are in Christ comes before what you do in the gym.
Most fitness programs start with your body and never touch the man. DMF starts with identity. When a man knows who he is, discipline stops being a fight — it becomes who he is. Training, nutrition, and habits follow from that foundation, and that's why the change lasts.
This isn't a quick fix or a 30-day shred. It's coaching for men who want to be strong for their families for decades — in body, in faith, and in how they lead at home.
Not influencers. Not 22-year-olds with no responsibilities. Husbands, wives, dads, and professionals with full lives — getting strong and staying that way.
7 months
Ron & Cathy
Started training twice a week. Seven months later, they're lifting four days a week with their nutrition consistent alongside the workouts. Strength, energy, and a healthier life — built together as a couple.
“Consistency became their lifestyle.”
50+ lbs down
Cliff
Cliff is 50+ lbs down and a stronger man — and it didn't stop with him. The way he leads his family changed with it. When dad gets healthy, the whole house feels it.
40 lbs · 9 months
Karolann
Karolann lost 40 lbs in 9 months without living in the gym. Short, focused training and a nutrition plan that fit her real life — proof you don't need hours a day to change your health.
Derek coaching 1-on-1 — every DMF program is personal, never a template.
Multiple couples have lost 100+ pounds together in a single year.
Clients have been set free from addiction — because this was never only about the weight.
What Clients Say
“I love how my workouts are short and intense to make it work with my busy schedule.”
Ethan Swirtz — Coaching Client
Results You Can Measure
The scale doesn't lie — and neither do the photos.
Real client tracking from inside the program. Steady, week-after-week progress — not a crash diet, not a filter.
Cathy Overstreet — 182 → 151 lbsDown 31 lbs and still goingWill Martinez — 303 → 258 lbs45 down and countingTyler Wessling — 334 → 322 lbsIn his first 3 weeks
JD — June to October
@jd_peakbaggins · Progress photos, June 7 → October 15
June 7June 7Oct 15Oct 15
JD — June to October: leaner, stronger, built in his garage gym
Actual client experiences. Individual results vary. These are real clients and real results shared with permission. Individual results vary — your outcome depends on your starting point, consistency, and effort. Coaching is not a guarantee of any specific result.
Everything in DMF is built on three pillars. No fluff. Each pillar is built around your schedule, your equipment, and your life — then adjusted as you progress.
Pillar 1
Customized Training Plan
Custom workouts delivered in the Trainerize app — at home or in the gym, built for your equipment and your body.
✓Built for your schedule and equipment
✓Busy-day sessions of 20–30 minutes
✓Progressions that keep you moving forward
Pillar 2
Personalized Nutrition Coaching
Personal calorie and protein targets with practical meal guidance — real food, no starvation diets, no weird rules.
✓Targets set for your body and goal
✓Simple, practical meal guidance
✓Family dinner stays family dinner
Pillar 3
High-Level Accountability
This is where most programs end and DMF begins. You're checked on, coached, and adjusted — every single week.
A full year of 1-on-1 coaching for busy dads and professionals who are done starting over. One program, everything included — built to change your health and keep it changed.
Everything you get
Personal coaching from Derek and his team of five — not an app subscription, not a PDF, not a group program where you're a number.
✓Custom training program in Trainerize — home or gym
✓Personal calorie & protein targets with meal guidance
✓Weekly check-ins and accountability
✓1-on-1 coaching calls with Derek
✓Direct support between sessions
✓Program adjustments as your body and life change
✓Faith-anchored coaching — identity before intensity
Start with a free call
Your Discovery Call is where we talk through your goals, your schedule, and what's actually been holding you back — then map out whether the Annual Transformation Program is the right fit.
We'll discuss the coaching option, commitment, and pricing on your free Discovery Call.
A short call to see if it fits your team — pricing and details are covered on the call.
A real program for every employee
Each team member gets a custom training program and personal nutrition targets — not a generic step challenge or a PDF nobody opens.
Coaching & accountability included
Weekly check-ins with the DMF team keep your people engaged and progressing long after the kickoff excitement fades.
Fun team challenges & leaderboards
Friendly competition that builds culture while it builds health — your team encourages each other instead of going it alone.
Zero admin for the owner
We run the program. You get a healthier team without another thing landing on your desk.
Trusted by teams at
Vie Magazine & Media · Black Bear Coffee + Bread Company · Engel & Völkers · Pickle's Sandbar Restaurant · lululemon
The Book — Free
Fitness with God
A Practical Guide to Help You Walk in Lifelong Victory in Your Health and Fitness
Derek's book on the foundation underneath everything at DMF: your health changes for good when it starts with who you are in Christ.
Read it free, one chapter at a time. One full chapter lands in your email every Saturday — the complete chapter in the email, plus a link to the audiobook version — starting with the Introduction.
—Introduction
1Identity
2Vision
3Growth
4Training in Godliness
5Family Discipleship
6Daily Non-Negotiables
7Offers
Audiobook Preview
Listen: a 1-minute highlight — Chapter 3: Growth
Fitness with God — Chapter 3: Growth highlight (1:05), read from the audiobook
Get Fitness with God free — one chapter every Saturday
Join the free Saturday chapter series and read the whole book in your inbox, one week at a time.
✓The full chapter in the email — read it right there, no download needed
✓Plus the audiobook recording of that chapter, linked in every email
✓Introduction through Chapter 7 — the complete book, in order
✓Unsubscribe anytime — one click, no hard feelings
One email a week, on Saturdays. Free — no card, no pitch in every chapter.
The App
PAIDFOR — the free faith & fitness app
Derek is a co-founder of PAIDFOR, a free app built to bring faith and fitness together in one community — workouts, encouragement, and believers pursuing health together. Partnerships with PAIDFOR are gifted: app access, content collaboration, and cross-promotion for creators and trainers who share the mission.
For creators & trainers interested in partnering with PAIDFOR.
The Brotherhood
Iron Sharpens Iron
No man grows alone. Iron Sharpens Iron is the men's faith & fitness group Derek founded in Florida — men who met Monday through Friday at 7 AM to pray, train, and fellowship before the day began.
That brotherhood is the heartbeat behind everything DMF teaches: men get sharper in the company of other men who refuse to let them stay where they are. It's the same accountability Derek brings to every coaching client — you were never meant to carry this by yourself.
“As iron sharpens iron, so one man sharpens another.”Proverbs 27:17
Derek McMahon has coached for more than a decade, helping busy dads and professionals get strong, lose the dad bod, and lead their families well — with faith at the center, not bolted on.
He's a husband to Leah and dad to Malachi and Jeshua, based in Colorado. He founded Derek McMahon Fitness, co-founded PAIDFOR, founded the Iron Sharpens Iron men's group, and wrote Fitness with God — all with a team of five behind him and his studies at Charis Bible College deepening the faith foundation his coaching is built on.
✓10+ years coaching clients online and in person
✓NASM Certified Personal Trainer
✓B.S. Exercise Science — Winona State
✓Student at Charis Bible College
✓60+ active clients, supported by a team of five
Founder — Derek McMahon FitnessCo-founder — PAIDFORAuthor — Fitness with GodFounder — Iron Sharpens IronSpeaker
Less than you think. Training is built around your schedule, and busy-day sessions run 20–30 minutes. Most clients train 3–5 days a week in short, focused sessions — Ethan, one of our clients, puts it best: the workouts are “short and intense to make it work with my busy schedule.”
Do I need a gym membership or equipment?
No. Your program is built for what you have — a full gym, a garage setup, or just dumbbells at home. Training happens at home or in the gym, and your plan is adjusted to your equipment from day one.
I'm really out of shape. Is this for me?
Yes — that's exactly who this is for. You don't get in shape to start coaching; coaching is how you get in shape. Your program starts at your current level and progresses as you do. Most of our clients started out of shape, busy, and frustrated with themselves.
What if I have injuries or physical limitations?
Your program is custom-built around your limitations — bad knees, a cranky shoulder, an old injury. On your Discovery Call we'll talk through what you're working with, and your training is designed to build strength safely around it.
How does online coaching actually work?
Your workouts live in the Trainerize app, built personally for you. You train on your schedule, log your work, and check in weekly. Derek reviews your progress, adjusts your program, and coaches you on calls — you get a personal coach and real accountability without having to be in the same room, or even the same state.
What does it cost?
We'll discuss the coaching option, commitment, and pricing on your free Discovery Call. Every man's situation is different, and the call is where we make sure the fit — and the investment — makes sense before anything else.
What happens on the Discovery Call?
It's a free, relaxed 1-on-1 conversation with Derek. You'll talk through your goals, your schedule, and what's been holding you back. You'll leave with a clear next step either way — and if the Annual Transformation Program is the right fit, we'll walk through exactly what that looks like. No pressure, no hard sell.