Mario Tomic says fat loss isn't a mystery - it's a short list done consistently. Here's how to turn that list into a system your clients actually run.
The fat-loss "checklist" is not the hard part - everyone already knows it. The hard part is doing it every day when motivation is gone. That is the real lesson underneath Tomic's approach: build on a few first principles, then turn each one into a tracked habit instead of a willpower test. This breakdown covers his argument in our own words, adds our honest take for running a client roster, and shows how to install that system once and reuse it across every client.
By Markus Evers · September 2026 · a Coachway video breakdown
the short version
Tomic's video builds fat loss from first principles - a sustained calorie deficit, enough protein, resistance training and daily walking - at a sustainable pace, and his core point is that these work only when you run them as systems and habits instead of relying on motivation. The one thing a coach should do about it: stop handing clients the checklist as information and start delivering it as tracked, scheduled habits you review and adjust every week.
Mario Tomic - If I Was at 30% Body Fat Again, This is What I Would Do (7 Steps)
Source: Mario Tomic on YouTube - "If I Was at 30% Body Fat Again, This is What I Would Do (7 Steps)". Watch on YouTube. We embed the public video and summarise it in our own words; the video, title and channel belong to Mario Tomic, and nothing here implies his endorsement of Coachway.
Who is Mario Tomic, and why coaches watch
Mario Tomic is a fitness and fat-loss coach who came to it the long way round: he was an overweight software engineer before he lost the weight, got lean and turned the process into a coaching business. That background shapes his whole style - he treats getting lean like a systems problem rather than a motivation problem, and his most-watched content is the step-by-step "if I was at X% body fat again, here's exactly what I'd do" format. For coaches, he is a useful reference precisely because he is not selling a hack. His entire premise - that the fundamentals are known and the missing piece is execution - is the same problem coaches get hired to solve. This page is written through that lens: not "should I copy Tomic's checklist," but "how do I get my clients to actually run it."
What Tomic actually argues (our summary)
This is our summary of the ideas in the video, in our own words - not a transcript. Watch the original for his exact steps, examples and framing.
- 1
Start from first principles, not tricks. Fat loss comes down to a sustained calorie deficit, enough protein, resistance training and daily movement. Nothing exotic - the fundamentals are the whole game.
- 2
Knowing isn't the bottleneck - doing is. Almost everyone already knows the checklist. People stall not because the information is missing but because they can't execute it consistently.
- 3
Systems beat motivation. Motivation is unreliable, so anything that depends on it eventually breaks. Turn each fundamental into a scheduled, low-friction habit and it keeps running when motivation is gone.
- 4
Automate the fundamentals into daily habits. A protein target, a step count, planned training - built into the routine so they happen by default rather than requiring a fresh decision each day.
- 5
Prioritise a sustainable pace. The aim is a deficit the person can hold long enough to reach the goal, not the fastest crash that collapses in weeks. Boring and repeatable beats intense and abandoned.
Coachway's take
We agree with the premise almost completely, and it's the reframe most new coaches need to hear: your value isn't the checklist. The deficit, the protein, the training, the steps - clients can find all of that for free in an afternoon. What they're actually paying for is execution: someone who turns those fundamentals into a plan they run every day and can't quietly abandon. Tomic is describing the coaching job without calling it that.
Where we'd add nuance for a coaching business: "systems beat motivation" is true, but a system a client builds alone still leans on their own discipline to maintain. That's where a coach and a platform change the maths. When the protein target, step goal and training sessions live in one place the client opens daily - with logging, streaks and a coach who reviews them - the system stops depending on the client's motivation and starts depending on structure and accountability. That's the difference between watching a great video and actually getting lean.
The other coaching-specific point: Tomic is teaching one person how to coach themselves. You're coaching twenty people who each have a different life, schedule and starting point. The sustainable pace he recommends isn't one number - it's a per-client decision you make from their trend data, then adjust. The fundamentals are universal; the deficit size, the step target and how hard you push are individual, and that individualisation is exactly what a client can't do for themselves.
So our version of his advice is: install the four fundamentals as tracked habits, set a modest and sustainable pace, review the actual data weekly and adjust the deficit from the trend - not the daily scale. Then build that whole system once as a template and reuse it across the roster, so every client gets the same reliable structure without you rewriting it from scratch each time.
Turn the first principles into a system the client runs daily
Tomic's whole argument is "systems beat motivation" - and a system is only real if the client interacts with it every day. That's what Coachway is built to do. Set the calorie and protein targets in the meal planner so the daily nutrition habit has a clear number to hit; track the step goal, weight trend and session logs in client progress so the fundamentals show up as data you can actually review; and use automations to send the check-ins and reminders that keep the habits running without you doing it by hand. The client opens one app, sees the short list, logs it, and you see whether it's being done - which is exactly the accountability layer his solo-viewer version can't provide.
If you want the strategy layer first, our breakdown of the calorie deficit for coaches covers the fundamental this whole system rests on, and the guide to habit coaching for fitness clients goes deeper on turning "systems beat motivation" into something you actually deliver.
Fat-loss habit tracker (first principles, turned into a system)
A fill-in tracker you can copy for any client. It takes the four fundamentals and makes each one a tracked daily habit with a target and a place to log it - which is what turns "I know what to do" into "I did it." Set the actual numbers per client from your assessment; the placeholders and defaults below are our coaching structure, not figures stated in the video.
Daily fat-loss system
The daily habits
| Habit (first principle) | Client target | How it's tracked | Done? |
|---|---|---|---|
| Calorie deficit | ___ kcal/day | Daily food log | ☐ |
| Protein | ___ g/day | Daily food log | ☐ |
| Resistance training | ___ sessions/week | Session log | ☐ |
| Daily walking / NEAT | ___ steps/day | Phone / watch step count | ☐ |
| Sleep (support habit) | ___ hrs/night | Quick daily check-in | ☐ |
Weekly review (coach)
| Check | What you're looking at | Action |
|---|---|---|
| Adherence | % of habit boxes actually hit | Low? Fix the system before the numbers |
| Weight trend | Weekly average, not daily scale | Stalled 2+ wks with good adherence? Adjust deficit |
| Pace | Rate of loss vs sustainable target | Too fast/harsh? Ease the deficit |
| Friction | Which habit keeps getting missed | Make that one easier, don't add willpower |
How to use it: fill in each client's targets from your assessment, have them log the daily habits, and run the weekly review from the trend - not a single day's scale weight. When adherence is high but the scale stalls for two-plus weeks, adjust the deficit; when adherence is low, fix the system (make the missed habit easier) before touching the numbers.
FAT-LOSS HABIT TRACKER (via Coachway) - first principles turned into a tracked daily system. Targets are per-client placeholders; defaults are our coaching structure, not figures from the video. THE DAILY HABITS Habit (first principle) Client target How it's tracked Done? Calorie deficit ___ kcal/day Daily food log [ ] Protein ___ g/day Daily food log [ ] Resistance training ___ sessions/week Session log [ ] Daily walking / NEAT ___ steps/day Phone / watch step count [ ] Sleep (support habit) ___ hrs/night Quick daily check-in [ ] WEEKLY REVIEW (COACH) Check What you're looking at Action Adherence % of habit boxes actually hit Low? Fix the system before the numbers Weight trend Weekly average, not daily scale Stalled 2+ wks with good adherence? Adjust deficit Pace Rate of loss vs sustainable target Too fast/harsh? Ease the deficit Friction Which habit keeps getting missed Make that one easier, don't add willpower HOW TO USE: Fill in each client's targets from your assessment, have them log the daily habits, and review from the weekly trend - not a single day's scale. High adherence but a 2+ week stall = adjust the deficit; low adherence = fix the system (make the missed habit easier) before touching numbers.
A fat-loss system for clients - FAQ
What is Mario Tomic’s approach to fat loss?
Tomic builds fat loss from first principles rather than tricks: a sustained calorie deficit, enough protein, resistance training, and daily walking or general movement (NEAT), executed at a pace that is sustainable rather than punishing. The part he stresses most is that these are not the hard bit to know - they are the hard bit to keep doing - so he turns each one into a system and a habit instead of relying on motivation. For a coach, the takeaway is that the client already 'knows' the checklist; your job is to make it run on autopilot.
Why does he say systems beat motivation for getting lean?
His argument is that motivation is unreliable and fades, so anything that depends on it eventually breaks down - which is why people who know exactly what to do still stall. A system is the opposite: the behaviour happens because it is scheduled, tracked and low-friction, not because the client feels inspired that day. For coaching, that reframes the whole job. You are not selling willpower or a secret method; you are installing repeatable habits - hit a protein target, take the steps, log the session - and reviewing them so the boring, repeatable version wins over the intense version that gets abandoned.
How fast should a client lose fat, according to this approach?
Tomic favours a sustainable pace over aggressive crash dieting - the point is a deficit the client can hold for long enough to actually reach the goal, not the fastest possible drop that collapses in a few weeks. He does not put a specific universal number on it in the way we would translate for a client, so as coaches we set a modest weekly rate, keep protein and training in place to protect muscle, and adjust the deficit based on real trend data rather than chasing the scale. Slower-but-kept beats faster-but-quit.
How can a coach turn a fat-loss checklist into something clients actually do?
The move is to stop delivering the checklist as information and start delivering it as tracked, scheduled behaviour. Each first principle becomes a habit with a target and a way to log it: a calorie and protein target the client hits daily, a step goal on their phone, planned training sessions, and a weekly review where you look at what actually happened and adjust. That is exactly the gap most coaches leave open - they explain the plan brilliantly and then hope the client executes it alone. Building the plan as habits inside a platform, with accountability, is what closes it.
More fat-loss coaching breakdowns
- · Will Tennyson on sustainable fat loss - the same "kept beats perfect" idea, from a different creator.
- · Ben Carpenter on the calorie deficit - the fundamental this whole system rests on.
- · The full roundup: fitness YouTubers coaches should study.
Keep dialing in fat-loss coaching
all guidesWill Tennyson on Sustainable Fat Loss: Adherence-First Fat Loss (Coach Breakdown)
Will Tennyson's sustainable, adherence-first fat-loss message, broken down for coaches: why moderation and habits beat crash diets, and how to build a repeatable fat-loss system for clients.
Read the guideSohee Lee: Sustainable Fat Loss and Client Adherence (Coach Breakdown)
Sohee Lee's video on setting up fat-loss dieting numbers, broken down for coaches: why adherence beats the perfect plan, and the habit-tracking and weekly check-in systems that make it stick.
Read the guideHabit Coaching for Clients: A Coach's Playbook (2026)
Habit coaching for clients is a repeatable system, not a pep talk: choose one keystone habit anchored to something already in the client's day, have them log it daily while you review weekly, and set a minimum-viable floor so a streak survives a bad day. The operational playbook that pairs with the frameworks deep-dive.
Read the guideFree tools for this: Macro Calculator · One-Rep-Max Calculator · Warm-Up Set Calculator
Build the fat-loss system once, reuse it across every client
Tomic's point is that systems beat motivation - and a system is only real if the client runs it daily. Coachway lets you set each client's calorie, protein and step targets, track the habits and trend in one place, and automate the check-ins that keep them going - so the fundamentals happen by default instead of by willpower. Start your 14-day free trial and turn the first-principles checklist into a plan your clients actually keep.
