Marc Lobliner preps physiques with a boring, repeatable diet. Here's how to turn that into a check-in-driven prep system for your clients.
A full day of eating ten weeks out from a pro show sounds like it should be exotic. It isn't. Lobliner's prep runs on staple meals, steady macro targets and small weekly adjustments - and that is exactly why it works. This breakdown covers his pragmatic approach in our own words, adds our honest take for taking a client to a stage or a photoshoot, and shows how to run the whole prep as a check-in-driven system you reuse for every client.
By Markus Evers · September 2026 · a Coachway video breakdown
the short version
Lobliner's full-day-of-eating video shows a deliberately unglamorous prep: a repeatable default diet of staple meals, macro targets the client can actually hit, and small adjustments driven by weekly check-ins against the scale and the mirror - with a calm peak week instead of extreme manipulation. The one thing a coach should do about it: stop reinventing a prep plan every week and instead run one repeatable default-diet-plus-check-in system per client, adjusting on evidence.
Marc Lobliner - Full Day of Eating 10 Weeks Pre-Pro Contest with Marc Lobliner!
Source: Marc Lobliner on the Tiger Fitness channel - "Full Day of Eating 10 Weeks Pre-Pro Contest with Marc Lobliner!". Watch on YouTube. We embed the public video and summarise it in our own words; the video, title and channel belong to their owners, and nothing here implies endorsement of Coachway.
Who is Marc Lobliner, and why coaches watch
Marc Lobliner is a competitive physique athlete and long-running fitness creator who fronts the Tiger Fitness channel, where this video lives. He has built an audience on high-volume, no-nonsense content about training and dieting, and he is best known for a pragmatic, do-what-works stance rather than dogma. For coaches, his contest-prep and full-day-of-eating content is useful precisely because it is unglamorous - it shows the boring machinery of prep. That is the lens this page is written for: not "should I copy his exact meals," but "what does his repeatable, check-in-driven prep mean for how I take my own clients to a stage or a photoshoot."
What Lobliner's prep actually shows (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 meals, foods and numbers.
- 1
Prep runs on a repeatable default diet. The full day of eating is built from staple meals he can repeat, not a new menu each day. The plan is designed to be executed on autopilot, which is what makes it survivable over a long prep.
- 2
Foods fit targets, not a clean-vs-dirty list. The approach is macro-target-led - choose foods that hit protein, carbs and fats for the day rather than moralising ingredients. That keeps prep flexible enough to actually stick to.
- 3
Adjustments are small and evidence-based. The physique gets there through steady changes read off the scale trend and the mirror over weeks - not a crash. You move calories a little, then look again.
- 4
Peak week stays calm. The framing is against extreme water, sodium and carb manipulation in the final days. If the diet has been run properly, peak week is a light touch, not a rescue.
- 5
Sustainability beats severity. A prep the person can adhere to for the whole timeline beats an aggressive plan that breaks adherence. The best prep diet is the one that gets executed to the end.
Coachway's take
We're fully on board with the core idea, and it's the reframe most coaches need for prep: it is a system, not a series of clever meal plans. A repeatable default diet plus small, evidence-based adjustments is exactly how you take a client from ten-ish weeks out to the stage without burning them - or yourself - out. Lobliner is modelling the unglamorous machinery, and that machinery is the whole job.
Where we'd add nuance for a coaching business: Lobliner is an experienced competitor dieting himself, with a decade of knowing how his own body responds. Your prep client usually isn't. A first-timer heading for a show or a photoshoot needs more guardrails, not fewer - which means the weekly check-in, the progress photos and the readiness questions matter even more than they do for him. When the client can't self-assess, your review of the trend and the photos is the safety system.
The other coaching-specific point: most of your clients aren't competing at all - but the same system carries over. The default-diet-plus-check-in loop that gets someone stage-lean is the same loop that gets a general fat-loss client to a goal without a rigid plan they'll abandon in three weeks. Learning to run prep well makes you better at every deficit you'll ever program.
So our version of his approach is: build a small default diet the client can repeat, set macro targets they can hit, run a real weekly check-in with scale, photos and readiness, and adjust in small steps - keeping peak week calm. Then build that whole loop once as a template and reuse it, instead of hand-crafting a bespoke prep for every client from a blank page.
Run prep as a check-in-driven system, not a weekly rewrite
A prep approach only pays off if you can deliver it without rebuilding everything each week. That's where Coachway's tooling fits the loop directly. Set the default diet and macro targets in the meal planner so the client repeats staple meals against clear numbers. Send a structured weekly check-in form - weight, photos, adherence and readiness - on the schedule you set, so the data you need to adjust arrives automatically. Then read the scale trend and the progress photos side by side in client progress and make your small calorie moves off evidence, not guesswork. As the show nears and the mirror matters more than the number, the photos are right there next to the trend.
If you want the strategy layer first, our guides to running client check-ins and using client progress pictures cover the review side, and how to adjust client macros covers the calorie-moving decisions you'll be making off that data.
Contest-prep planner (default diet + weekly check-in loop)
A fill-in planner you can copy for any prep or photoshoot client. The top table is the repeatable default diet - a few staple meals against macro targets you set. The bottom table is the weekly check-in loop that drives your adjustments. The fields are placeholders for your own numbers; nothing here is a figure from the video.
Prep planner
Default diet (repeatable staple meals)
| Meal | Staple option | Protein / carb / fat target | Swap options |
|---|---|---|---|
| Meal 1 | — | __ / __ / __ | — |
| Meal 2 | — | __ / __ / __ | — |
| Meal 3 | — | __ / __ / __ | — |
| Pre / post-training | — | __ / __ / __ | — |
| Daily total (target) | — | __ / __ / __ | kcal: __ |
Weekly check-in loop
| What you review | Signal | Adjustment rule (your call) |
|---|---|---|
| Weight trend | Weekly average vs last week | On target = hold; stalled = small cut |
| Progress photos | Same angles, same light | Judge leanness vs the calendar |
| Adherence | % days on the default diet | Low = fix adherence before cutting |
| Training + readiness | Performance, sleep, energy, mood | Falling = ease the deficit / hold |
| Peak week | Final week plan | Keep calm - light touch, no extremes |
How to use it: fill the default diet once with the client's own staple meals and macro targets, then run the check-in loop weekly. Move calories in small steps off the weight trend and photos together - and if adherence is low, fix that before you cut further. All numbers are yours to set; none are taken from the video.
CONTEST-PREP PLANNER (via Coachway) - default diet + weekly check-in loop. All figures are yours to set; none are from the video. DEFAULT DIET (repeatable staple meals) Meal Staple option Protein/Carb/Fat target Swap options Meal 1 __ / __ / __ Meal 2 __ / __ / __ Meal 3 __ / __ / __ Pre/Post-training __ / __ / __ Daily total (target) __ / __ / __ kcal: __ WEEKLY CHECK-IN LOOP What you review Signal Adjustment rule (your call) Weight trend Weekly average vs last week On target = hold; stalled = small cut Progress photos Same angles, same light Judge leanness vs the calendar Adherence % days on the default diet Low = fix adherence before cutting Training + readiness Performance, sleep, energy, mood Falling = ease the deficit / hold Peak week Final week plan Keep calm - light touch, no extremes HOW TO USE: Fill the default diet once with the client's staple meals and macro targets, then run the check-in loop weekly. Move calories in small steps off the weight trend and photos together. If adherence is low, fix that before cutting further.
Contest-prep dieting for clients - FAQ
How do you diet a client for a bodybuilding show or photoshoot?
The approach Marc Lobliner models in this full-day-of-eating video is deliberately unglamorous: build a repeatable default diet of staple meals the client eats most days, set macro targets they can actually hit, and then adjust slowly based on weekly check-ins against the scale and the mirror. The physique is built over the long stretch of prep, not in the final days. For a coach, that means the job is less about a clever meal plan and more about running a consistent system: the same core meals, a steady deficit, and small evidence-based adjustments over weeks.
What is a default diet in contest prep?
A default diet is a small set of staple meals the client repeats most days, so the plan becomes something they can execute on autopilot instead of decoding a new menu every week. Lobliner's full-day-of-eating shows exactly this - the same reliable meals structured to hit his targets. As a coach you can borrow the principle without copying his food: give each prep client three or four go-to meals that fit their protein, carb and fat targets, and let repetition do the heavy lifting for adherence. Variety is a nice-to-have; consistency is what actually gets someone to the stage.
Do clients need extreme peak week manipulations?
Lobliner's framing is that prep should stay relatively calm and controlled rather than swing into dramatic water, sodium and carb manipulation in the last few days. That is the safer default for a coach, especially with clients doing their first show or a photoshoot: if the diet has been run properly for the whole timeline, peak week is a light adjustment, not a rescue mission. Extreme depletion and rebound tricks add risk and rarely fix a physique that is not already lean. Keep peak week simple, keep the client feeling good, and trust the weeks of consistent work.
How often should you check in with a client during contest prep?
Prep is the setting where a weekly check-in earns its keep. You are making calorie and training adjustments off real data - weight trend, progress photos, and how the client is training, sleeping and recovering - and those decisions only work if the information arrives on a schedule. A structured weekly check-in with the scale trend, photos and a short set of adherence and readiness questions gives you what you need to move calories in small steps rather than guessing. The closer to the show, the more the photos and how the client looks matter relative to the scale number alone.
More nutrition-coaching breakdowns
- · Mike Matthews on flexible dieting - the macro-target-led thinking behind a default diet.
- · Holly Baxter on diet breaks - managing a long deficit without breaking the client.
- · The full roundup: fitness-creator coaching breakdowns.
Keep dialing in nutrition coaching
all guidesGreg Doucette on High-Volume Dieting: Keeping Clients Full in a Deficit (Coach Breakdown)
Greg Doucette's high-volume dieting approach, broken down for coaches: why protein-anchored, high-volume meals keep clients full in a deficit, and how to program a diet they can actually keep off.
Read the guideLayne Norton on Why Adherence Beats Diet Type, Broken Down for Coaches
Dr. Layne Norton argues the best diet for fat loss is the one a client can actually stick to. Here is how a coach turns adherence into an accountability system with habits and weekly check-ins - plus a copy-paste check-in template and habit scorecard.
Read the guidePaul Revelia on Realistic Fat-Loss Timelines: How Long to Lose 30 lb (Coach Breakdown)
Paul Revelia's honest fat-loss timeline, broken down for coaches: a sustainable rate of loss, a real month-based window, planned maintenance phases and reading the trend - so client expectations survive past month one.
Read the guideFree tools for this: BMR Calculator · Cut Length Calculator · Refeed Day Calculator
Run prep as a system, reuse it across every client
A prep approach only pays off if you can deliver it without rebuilding everything each week. Coachway lets you set the default diet and macro targets, send a structured weekly check-in with weight, photos and readiness, and read the trend and progress pictures side by side - so you adjust on evidence, not guesswork. Start your 14-day free trial and run your next prep from one screen.
