How I Used AI to Get Back in Shape Working 11-Hour Shifts

I used to be in good shape. 220 pounds, working out regularly, eating well. Then my daughter was born and life changed completely. Newborn phase with a full-time physically demanding job does something to you. Sleep deprivation, stress, eating whatever was fast and available – I stopped taking care of myself and I did not even notice it happening until I was 300 pounds and none of my clothes fit.

I knew I needed to change. I just could not find a plan that fit my actual life. Every program I looked at assumed you had an hour and a half to spare every day, a fully stocked kitchen, and a job that did not drain every drop of physical energy you had. None of those assumptions were true for me.

So I stopped looking for a program and started building one – with the help of ChatGPT and a calorie tracking app called Cal AI that changed how I think about food. I started in January. I am down to 280 pounds and still losing steadily. Twenty pounds in about four months while working full time and raising a toddler.

This is what I actually did.

The Prompt That Built My Actual Plan

I had tried generic plans before. They lasted two weeks. This time I gave ChatGPT every real constraint I had and asked it to work around them:

“I am a truck driver. I work 11-hour shifts five days a week doing physical labor. I get home exhausted most nights. I have a toddler at home. I weigh 300 pounds and want to get back to around 220. I have maybe 30-45 minutes to work out on my days off and limited time and energy on work days. I do not want an intense gym program – I want something I can actually stick to given my situation. Build me a realistic plan.”

What came back was not a generic cut. It was a framework that prioritized nutrition over training (because nutrition is 80% of weight loss and does not require extra time), suggested a minimum viable workout for my days off, and acknowledged that my physical job already burns significant calories.

The specific recommendations: target 1 gram of protein per pound of my goal bodyweight per day (about 220 grams). Keep calories at a moderate deficit – not a crash, a sustainable reduction. Do resistance training 2-3 times per week on days off to preserve muscle while losing fat. On work days, just move – the job takes care of most of it.

That framework made sense. It was built for me. And I could actually follow it.

The App That Made Nutrition Actually Work: Cal AI

Tracking calories is the single most proven tool for weight loss. The problem is most people find it tedious and stop doing it within a week.

I use an app called Cal AI and it is the first calorie tracking approach that has actually stuck for me. Here is why: instead of manually entering every food from a database, you take a photo of your meal and it estimates the calories and macros automatically.

It is not always perfect – sometimes it misidentifies a food or gets the portion slightly off. But when that happens you can just tell it what it got wrong and it adjusts. The accuracy is good enough to be genuinely useful and the friction of logging is low enough that I actually do it consistently. That combination – good enough accuracy plus low enough friction – is what makes it work for a busy person.

The prompt I used to set up my nutrition targets: “I want to lose weight while preserving as much muscle as possible. I currently weigh 300 pounds, my goal is 220 pounds, and I do physical labor 5 days per week. Give me my daily calorie target, protein target, and a simple approach to hitting those numbers with foods that are easy to prep and available at most grocery stores.”

The Minimum Viable Workout

I work out on my days off. Not every day – that is not realistic when you have a physical job. But consistently, two to three times per week when I have the time and energy.

I asked ChatGPT to build me a workout that was effective for fat loss and muscle preservation, could be done in 30-45 minutes, required minimal equipment (I have dumbbells at home and access to a basic gym), and was simple enough that I did not need to think too hard about it when I was already tired.

Prompt: “Build me a simple strength training program for someone who wants to lose fat and preserve muscle. I have 30-45 minutes, I work out 2-3 times per week, and I have access to dumbbells and basic gym equipment. Make it straightforward – compound movements, clear sets and reps, no complicated programming.”

What came back: a push/pull/legs split hitting all major muscle groups across three sessions per week. Squats, deadlifts, bench press, rows, overhead press – compound movements that work the most muscle in the least time. Three to four sets of eight to twelve reps. Progressive overload – add weight or reps when the current weight feels manageable. That is the whole program.

It is not fancy. It does not need to be. Compound movements done consistently over months produces real results. The fancier programs do not work better – they just feel like more is happening.

How I Handle Nutrition on Work Days

Work days are where most people fall apart. You are tired, you are busy, and the easiest food is usually not the best food.

I solve this with prep. On my days off I ask ChatGPT to help me plan meals for the week based on what I have in the fridge and what my targets are:

“I need to hit about 220 grams of protein and stay around 2,400 calories per day. I have [list what is in my fridge and pantry]. I work long shifts and do not have time to cook during the week. Give me a simple meal prep plan I can do on Sunday that covers most of my meals Monday through Wednesday.”

What comes back is a concrete plan – specific meals, approximate portions, prep instructions. Not a gourmet cooking show. Chicken, rice, eggs, ground beef, vegetables. Simple foods that hit the targets and can be prepped in bulk.

The protein target is the most important number. When you hit your protein, you stay full, preserve muscle, and the calorie target takes care of itself more naturally. Chase protein first – everything else follows.

What Actually Made the Difference

I have tried to get back in shape before and failed. Here is what is different this time.

The plan was built around my real life instead of an ideal version of it. When I have almost nothing left on a work night, the plan does not require me to do anything hard – just hit my protein. The workout is reserved for days when I actually have capacity. That distinction – knowing what the minimum viable version of the day is – removes the all-or-nothing trap.

The all-or-nothing trap is what kills most fitness attempts. You miss a day, feel like you failed, and give up on the whole thing. When your minimum viable day is just “hit protein” – something that is achievable even on the worst days – you never fully fall off. You just have better days and minimum days. Both are wins.

I also stopped comparing my progress to people with completely different lives. A guy with a desk job and no kids can train six days a week and meal prep elaborate recipes. That is not my life. My progress looks different than his. That is fine. Consistent small progress over time beats unsustainable intensity every single time.

For the bigger picture on using AI across every area of your life, read our article on how AI is making me a higher quality man.