Flea Trainer.

Fleas are known to be the best jumper in the world. They can jump 220 times their own body length and 150 times their own body height. They are longest and highest jumper among animals compared to body size.

If you place them in a bottle with a lid on, the fleas will jump and hit the lid. If you remove the lid within a day or two, the flea will jump & get itself out of the jar without any difficulty. But the interesting thing happens when you remove the lid a few weeks later, you will realized that the fleas were only able to jump to the lid level. This is “conditioning”. The fleas by now think that all attempts to jump higher than the lid level is fruitless, hence they start practicing to jump just high enough before reaching the lid.

So to all out there, get your act together. There is no point in being a flea. We must all be a flea trainer. Training the fleas to get out even after the “conditioning” effect, after all, the temporary lid can really be removed.