Questions & Answers about Regelmäßige Übung macht mich stark.
German has different pronouns for different grammatical cases:
- mich = accusative (direct object)
- mir = dative (indirect object)
In this sentence, mich is the direct object of macht:
- Wer oder was macht? – Regelmäßige Übung (subject, nominative)
- Wen oder was macht sie stark? – mich (direct object, accusative)
Because the verb is acting directly on me (it makes me strong), you must use mich, not mir.
Leaving out the article here makes the sentence more general and proverb-like:
- Regelmäßige Übung macht mich stark.
= Regular practice (in general) makes me strong.
If you add an article, the meaning becomes more specific:
- Die regelmäßige Übung macht mich stark.
= The regular exercise/practice (that we’re talking about / that I do) makes me strong.
Both are grammatically correct. Without an article, it sounds like a general rule or principle, similar to a proverb.