Methodology

Best Training Split for a Busy Schedule

Francesco Zen, founder of ZTraining · Last updated 19 June 2026

The exact structure

The exact structure Demanding-oxygen circuits: 10 exercises, 30 seconds on, 10 seconds off, done as one continuous round. Short enough to fit before the day starts, intense enough to actually count.

When more makes sense, but isn't required

For anyone with slightly more room in the week, a 45-minute gym session three times a week is a different, more complete approach, more total volume, more variety. It's not strictly necessary though. The 15-minute circuit genuinely holds its own for someone whose schedule simply won't allow for more.

He built Mr Z, an AI coach trained on his methodology to bring the same approach to a wider audience.