Learn Romanian: Vom face încălzirea înainte să ridicăm greutățile. - We will do the warm-up before we lift the weights.

In Romanian, the conjunction "before" is expressed as înainte să followed by a verb in the subjunctive mood. Unlike English, which uses the normal present tense here ("before we lift"), Romanian requires the subjunctive because the second action is anticipated and hasn't actually happened yet.

How is the noun încălzirea constructed?

It stems from the adjective cald (warm or hot). This gives us the verb a încălzi (to warm up) and its noun form încălzire (a warm-up). In this sentence, it has the feminine definite article -a attached at the end, making it încălzirea (the warm-up).

Is ridicăm in the subjunctive mood here? It looks exactly like the present tense.

Yes, it is in the subjunctive mood because it is triggered by să. For almost all Romanian verbs, the "we" form (first-person plural) is completely identical in both the present indicative and the present subjunctive, so you have to rely on context clues like să to tell them apart.

Does greutățile only refer to gym weights, or can it mean something else?

The singular noun greutate literally means "weight." While it is used for physical gym weights and body weight, it is also very commonly used metaphorically to mean "difficulty" or "hardship." For example, doing something cu greutate means doing it "with difficulty."