An exclusive interview with Optimum Nutrition's AI coaching assistant — the World’s 1st AI-powered sports nutrition coach".
It is not every day you get to interview an AI. They tend to be very punctual, suspiciously well-informed, and they never ask if there is free coffee (mostly because they don’t need any). We sat down, metaphorically obviously, with Coach Optimum, the AI coaching assistant living on the Optimum Nutrition website, to find out what it actually does, how it works, and whether it has any opinions on creatine loading protocols. Spoiler alert: it does.
THE INTRODUCTION
UNDER THE BONNET
At this point we asked Coach Optimum to explain the technology behind itself. Which, if you think about it, is a bit like asking someone to describe their own brain. It managed surprisingly well.
PUTTING COACH OPTIMUM TO THE TEST
We decided the best way to demonstrate what Coach Optimum can do is to simply ask it the kinds of questions real ON customers ask every day. The questions below are genuine — and so are the answers.
INTERVIEWER: How much protein do I actually need per day?
COACH OPTIMUM: Your daily protein intake depends primarily on your performance goals, activity level, and body weight—there isn’t a one-size-fits-all number.
For a personalised estimate (and tailored recommendations for carbs, fats, and calories), use the Optimum Nutrition Protein Calculator, on the Optimum Nutrition website & this beginner guide also explains why protein matters and how to think about your daily intake.
INTERVIEWER: Should I load creatine or just take it daily?
COACH OPTIMUM: You don’t need to load creatine. Taking it daily is enough, and it will work over time. A loading phase can speed up saturation, but it isn’t required.
A simple approach is 3–5 g daily, and consistency matters more than exact timing. If you want the fuller breakdown, see Creatine: for who, how much and when and Creatine performance guide.
INTERVIEWER: I'm a woman who trains 4x a week. What supplements should I be taking?
COACH OPTIMUM: Your supplement needs depend on your specific goal (fat loss, muscle gain, performance), your current diet, and what kind of training you’re doing 4x per week. A solid starting point for many active women is to make sure you’re consistently hitting your daily protein target; if you’re not, adding a protein shake can help you reach it.
If your training includes strength, speed, or power work, creatine monohydrate is typically taken consistently at 3–5 g daily, and you can take it for as long as you want to enjoy its performance benefits (some people use it year-round, others during intense training periods). If you want a pre-session boost, caffeine is commonly used 15–30 minutes before training to enhance focus and concentration.
To dial this in properly, use the Optimum Nutrition protein calculator on the Optimum Nutrition website for a personalised protein target and supplement recommendations based on your goal.
THE NUMBERS DON'T LIE
We asked Coach Optimum if it was any good. It deflected — "I'm not the best judge of my own performance" so we checked the data ourselves.
| Metric | Result |
|---|---|
| Engagement rate across priority markets | 66% — Google classifies anything above 65% as "excellent" |
| Average time on site (users of the tool) | 6m 42s — up from 1m 39s site average (3× uplift) |
| Response accuracy across 25,000+ questions | 92% |
| Revenue attributed vs. annual platform cost | 4x ROI vs. original investment |
| New users across all markets | 35,000+ with 22% returning to use the tool again |
ONE FINAL QUESTION
We thanked Coach Optimum for its time. It said it did not experience time in quite the same way we do, but that it appreciated the sentiment.
