to be on condition
The Spanish phrase 'estar a régimen' translates to 'be on a diet' in English. This typically implies that someone is following a specific dietary program, often for the purposes of losing weight, maintaining weight or improving their health. Its usage indicates a temporary state, as diets are generally adjusted or changed over time.
I have to be on a diet if I want to lose weight before summer.
This sentence points out the speaker's need for observing a dietary regimen in preparation for the summer season, expressing a goal of weight loss.
Doctor, should I be on a diet to improve my health?
In this context, the speaker is inquiring a doctor whether adhering to a diet is necessary for improving their health, showing the use of the phrase in questioning scenarios.
I can't eat that cake because I have to be on a diet.
This usage demonstrates a typical scenario where a person avoids eating certain food because they need to maintain a diet, reinforcing the idea around dietary restrictions.