Pokemon Fire Red/ Leaf Green Exp. and Black Belt Trick

This is an easy way to make tons of Fighting type Pokemon 10% better and gives you lots of Exp. for any Pokemon that can learn Thief. First, go to Mt. Moon. Search through every room until you find an item ball. One item ball in Mt. Moon contains Tm. 46 Thief. When you get it, go anywhere that you can find a strong Ghost or Psychic Pokemon. When you find one that you like, catch it. I chose Lost Cave because there are really powerful Haunter there. If you are really patient, you might also go to Lavender Town for a Gastly or Haunter in Pokemon Tower. Train it until it's at least Lv. 60. Teach it Thief, and I recommend also teaching it Psychic. Then go to One Island. Surf to the Ember Spa. Battle all of the trainers with your Pokemon that knows Thief. Use Thief on their first Pokemon, then use Psychic. Every time you battle at trainer there this way, you should get a Black Belt. A Black Belt boosts the power of any Fighting type attack by 10% and sells for $50. This is very helpful if you mostly catch Fighting type Pokemon. After a battle, take the Black Belt away from your Pokemon that knows Thief. Keep using the Vs. Seeker to battle the trainers more. It takes 100 steps to recharge. When your Pokemon with Thief faints or runs out of PP for Theif, go into the Ember Spa. The water in there heals your Pokemon like a Pokemon Center. It also helps to do this when your Pokemon runs out of PP for Psychic, because without Psychic, defeating the Fighting Pokemon will probably be hard. And NEVER use a Dark type Pokemon, because Fighting moves are Super Effective against Dark type Pokemon.