Learn Italian: Anche se le gambe sono stanche, non scivolo. - Even though my legs are tired, I don't slip.

The phrase anche se (even though / even if) is followed by a normal indicative verb when it describes a real, factual situation. Since the legs are actually tired right now, you just use the present tense sono. You would only need a more complex verb form if you were talking about a hypothetical situation, like 'even if my legs were tired'.

Why does the Italian say 'le gambe' (the legs) when the English translation says 'my legs'?

In Italian, it is standard to use definite articles (like le) instead of possessive adjectives (like mie) for body parts. The context makes it obvious that you are talking about your own legs, so the possessive word is dropped.

Why is the adjective 'stanche' spelled with a 'ch'?

The base masculine singular word for tired is stanco. To make it match the feminine plural noun gambe, it needs to end in -e. However, changing stanco directly to 'stance' would change the hard 'k' sound to a soft 'ch' sound (like in the English word 'cheese'). To keep the original hard 'k' sound, Italian adds an h, making it stanche.

What verb does 'scivolo' come from?

It comes from the regular -are verb scivolare, which means to slip or to slide. Scivolo is the first-person singular (io) form in the present tense, meaning 'I slip'.