Is there a way not to waste energy...

...when you are about to level up and your energy meter is full?
I know I can "Help" the creatures around (which requires energy) but most of the time I don't have some item required, so I have to buy the help with crystals which I cannot do because I don't have enough of them.
I don't want to spend real money.
Thanks in advance Fishies!

I always watch my energy meter versus my experience meter. As soon as I am getting close to leveling up, I try to time it right so that I level up just as I use up the remaining energy... but I know that's partly because I log in several times throughout the day. It's harder to do if you only log in once or twice.

One thing that definitely helps is if you have completed a quest, don't click on it to accept the award (which usually contains lots of xp that will bump you up to the next level). Do that AFTER you've used as much of your energy as you could, then collect all your awards.

thanks spocalina!