How to Say "jacked" in Spanish
The Spanish word for “jacked” is “mamado” — B1 level. This is a very common word in everyday Spanish.

Examples
Ese tipo está bien mamado porque entrena todos los días.
That guy is really buff because he trains every day.
No sabía que tu hermano estaba tan mamado.
I didn't know your brother was so ripped.
Si quieres ponerte mamado, tienes que comer más proteína.
If you want to get jacked, you have to eat more protein.
Matching the Ending
Since this word is describing a person, you must change the ending to 'mamada' if you are talking about a woman.
Using 'Estar' vs 'Ser'
Use the verb 'estar' to describe someone's current physical state of being muscular. 'Él está mamado' sounds more natural than 'Él es mamado'.
Formality Check
Mistake: “El gerente está muy mamado.”
Correction: In a professional setting, say 'El gerente es muy atlético' or 'está en buena forma'.
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