Breakdown of Moramo se više kretati radi kondicije.
morati
must
više
more
kretati se
to move (to be in motion)
radi
for the sake of
Questions & Answers about Moramo se više kretati radi kondicije.
Why do we use radi here instead of zbog?
The preposition radi shows purpose or a goal (doing something for the sake of fitness), while zbog shows cause (doing something because of an external reason). Since improving fitness is the forward-looking goal of moving more, radi is the correct choice.
What case is kondicije in, and why?
It is in the Genitive case. The preposition radi always requires the Genitive. The dictionary form is the feminine noun kondicija, and in the Genitive singular, the ending -a changes to -e.
Why is the reflexive pronoun se used with kretati?
Without se, the verb kretati means to move an object (like pushing a cart or moving furniture). To say that you are moving your own body or being physically active, you must use the reflexive form kretati se.
Why is se separated from kretati and placed right after Moramo?
The word se is an enclitic, which is a small, unstressed word that strongly prefers the second position in a sentence. Even though it logically goes with the infinitive kretati, the strict second-position rule pulls it right after the very first word, Moramo.