Translation

1. fit (in good overall physical shape)
2. able, prepared, up to a task (able to perform adequately, in contrast to a prior or possibly future state of inadequacy) predicative

   Ich war die letzte Woche krank, aber inzwischen bin ich wieder fit.

   I was sick last week, but I'm fully recovered now.

   Du solltest heute früh ins Bett gehen, damit du morgen fit für die Prüfung bist.

   You should go to bed early tonight, so you're well-rested for the exam tomorrow.

   So machen sie Ihr Auto fit für den Winter:

   Here's how to prepare your car for winter: