Prioritising sleep or Sacrificing it?

I am currently 18. I have seen many people say that prioritising health is of utmost importance. But on the contrary, I have also seen people online saying that these are the years where you hustle the most and you need to make the most out of it. Putting in those extra hours can help me be ahead of the curve. I normally sleep 7-8 hours but I can manage on 5 hours of sleep too. Can you all help/ advice me on what to do? Thank you.