Frogs Tire Easily:
All that jumping is hard work. After a few power jumps, you'll find your power meter starting to show some red - that means the maximum jump you can perform is smaller than normal.
Drink Frog Juice:
Feeling tired? Don't worry, just hop on to a yellow bottle of Frog Juice and your power meter will get reset all the way! Also, try jumping on trampolines for extra distance.