When it comes to synonyms for the phrase "more warm up," there are plenty of choices that can help you express this idea in a variety of ways. Some possibilities might include "further preparation," "additional stretching," or "extra conditioning." You could also use phrases like "more extensive warm-up" or "increased physical preparation" to convey a similar meaning. Ultimately, the exact synonym you choose will depend on the context and tone of your writing or speech. But with so many alternatives available, you should have no trouble finding the right way to say "more warm up" in any situation.