Before first 2-minute mirror exercise:
• some fin flare
• very little gill flare
• fish was kind of listless
After the first 2-minutes
• fin flare galore
• ridiculous gill flare that has only got more ridiculous
• fish is alert and enthusiastic about his actions
Have used it daily for a while now.
Like the title said - the exercise ball basically activated my Betta.
Drop it in, laugh for two minutes, pull it out, reward the victor with a bloodworm. Repeat daily for awesomeness.