NOTE: YOU MUST HAVE BEATEN OR AT LEAST UNLOCKED THE RIGHT TO FIGHT BLUE.

Ever wanted to level up your Pokemon but you're too lazy to do it yourself? Try this!

Go to the Day Care Center south of Goldenrod City and choose two Pokemon to be raised. Make sure you have a Pokemon that learns Fly.

Go to Viridian City and enter the gym. Go to where the first lot of arrows on the floor. Get some sticky tape and stick the left directional button down. Also get something small and heavy to place on top just in case it decides to make the player stop.

Then let it run (hopefully on a charger) and do whatever you want to do while it's levelling up.