It depends on how many you land in a particular round. There are about 5 rounds in professional kickboxing. If you're accurate, you'll need fewer kicks.
Doctors suggest an hour per day for exercise. That could be spread out throughout the day - you could do 30 minutes in the morning and 30 minutes at night,...
Your dish is probably too thin to immerse vinegar or ammonia. Try using an oven cleaner, WD40, or a metal cleaner first. Follow the instructions on the bottle as much...