Mr Z
An AI Coach for Home Workouts
Francesco Zen, founder of ZTraining · Last updated 19 June 2026
Why the approach doesn't change, just the intensity
Depending on what the event actually is, the plan still centres on body recomposition. What changes is the addition of cardio on days off, used specifically to accelerate the process within the time available.
What "pushing the envelope" actually means here
This isn't a crash approach. It's the same method, applied with a bit more intensity than a normal week, because there's a real deadline to work toward rather than an open-ended timeline.
Related: How long to see body recomposition results · Can you build muscle and lose fat at the same time?
He built Mr Z, an AI coach trained on his methodology to bring the same approach to a wider audience.