When you open the app for the first time of the day, a visual test is imposed to you. Doing this test grants you 5 energy points. You earn energy points thanks to your visual tests and you can access to the puzzles afterwards.
Each night, the count is reinitialized to zero. It is impossible to keep energy points for another day. To be able to play a puzzle, you must do your visual test of the day.
To earn even more energy points, you can answer an anonymous medical form. This form is sent to you every 7 days. When you answer it, you earn 5 more energy points.
Click on "Answer" to earn 5 additional energy points