Learn French: En utilisant l'agenda, tu deviens systématique pendant chaque intervalle. - By using the planner, you become systematic during each interval.

While the gérondif (en + present participle) translates literally to "by [doing]" or "while [doing]", French frequently uses it as a substitute for an "if" clause. In this sentence, En utilisant l'agenda is just a more elegant way of saying Si tu utilises l'agenda (If you use the planner).

Is l'agenda a meeting agenda?

No, this is a classic false friend. In French, un agenda is a planner, diary, or calendar used to schedule your personal time. If you need the agenda for a business meeting, you would ask for l'ordre du jour.

Can I put the en utilisant phrase at the end of the sentence instead?

Yes, you can say Tu deviens systématique pendant chaque intervalle en utilisant l'agenda. Starting the sentence with the gérondif just places a stronger rhetorical emphasis on the condition before revealing the result.

Why use pendant chaque intervalle rather than pour chaque intervalle?

Pendant highlights the actual passage of time, showing that you are acting systematically throughout the entire duration of the interval. Using pour (for) would sound a bit unnatural here, as it usually implies intention or doing something for the purpose of a noun.