On the condition of (à condition de)

Provided that: à condition de

To express a condition that must be met to achieve a result, use à condition de (provided that / on the condition of).

When the subject of the main action and the condition are the same, à condition de is followed directly by an infinitive verb.

You will strengthen your back provided you do weight training.
Tu renforceras ton dos à condition de faire de la musculation.
You can increase the intensity provided you sleep enough.
Tu peux augmenter l'intensité à condition de dormir assez.

If the infinitive is a reflexive verb, change the reflexive pronoun to match the subject of the sentence.

You will speed up recovery provided you rest.
Tu accéléreras la récupération à condition de te reposer.
You will improve your performance provided you train.
Tu amélioreras tes performances à condition de t'entraîner.

Physical training and health goals

This structure is especially useful for discussing fitness habits and goals, alongside vocabulary like la musculation (weight training) and la récupération (recovery).

You improve your performance on the condition of training regularly.
Vous améliorez votre performance à condition de vous entraîner régulièrement.
You will maintain a good posture provided you warm up.
Vous garderez une bonne posture à condition de vous échauffer.