Only 1% of people can find 2 concealed faces in the dinner image in 6 seconds.

[{"selector":"#anim-a1285a77-e5ef-4794-b4cc-4f8f55f73f33 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}]

[{"selector":"#anim-1bab1409-1b3d-4348-a63a-8f9359694e02","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-239a9d4a-041f-4896-9a90-c2aec3e6a46e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Brain teasers are puzzles readers try to solve. These brain puzzles are fun and tough.

[{"selector":"#anim-929bddfe-01e9-40d0-b867-5a53c2dc2f50","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-30c0d174-786a-49d9-a35e-28ae5ffa56d3 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] They boost cerebral ability, lateral thinking, memory, and entertainment.

[{"selector":"#anim-1d71f25f-7f17-4611-8419-dc7010081b41","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-72ca440a-0e04-466c-85ab-e76faff7a784 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Brain teaser tasks boost mood too. When you solve a puzzle, your brain releases more mood-regulating dopamine.

[{"selector":"#anim-3db2064e-4404-4a41-8e83-c4fb531ce664","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4104422c-4a8c-4023-9544-a7311df95565 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Here's another brain teaser to improve your cognition and mood. Ready for the challenge? Let's begin!

[{"selector":"#anim-af2708ac-82fe-438f-a27c-6a8ac484d102","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6a39c42f-7193-4877-90ce-eefb0f07affe [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] This brain teaser shows a three-person family eating at the table. The clock behind them indicates lunchtime, and the table has a variety of meals.

[{"selector":"#anim-6aa4ba2e-84c9-4335-a500-561180e41904","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7df7ad6d-5a15-4ec3-a45c-b0c0fb16defd [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] This photo shows a joyful family with a dog.

[{"selector":"#anim-a3a78910-6f53-4174-a044-bab931c96956","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-de6f9dc4-51d9-4135-9c86-0a8801d442ab [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] The photo puzzle appears tranquil and loving, but closer scrutiny reveals something unsettling.

[{"selector":"#anim-d1117659-4d25-41cb-a2c5-9caa6eb7714d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-30f56a2c-3ca1-4337-bc4a-9f59e1706872 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(25%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] You must identify two hidden faces in this brain challenge.

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[{"selector":"#anim-d4cc5626-fca3-4e48-9fe3-3da6202c4947","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] The Title Track Beat of “The Tortured Poets Department” by Taylor Swift Is Ideal for Cardiopulmonary Resuscitation Learn more