As fit as you are now! One idea of karate training is that whatever level you’re at, you’ll be pushed to go a little bit further than before, which is how your fitness improves. If you aren’t taking any regular physical exercise right now it’s a fantastic idea to start karate lessons as soon as possible. . You’ll find it exhilarating at first and that’s quite normal – most people have a few cobwebs in their system they need to shake off.
You know your level of endurance, and whether you’re exceeding it. The only person who loses out if you don’t try is you. We recommend being willing to give it a try. If you find the exertion too intense at first it’s quite alright to either slow down, or take a few minutes break.