Social media is full of health hacks for better sleep, clear skin, a functioning gut, you name it. Lately, a tip for aging and cognitive function is gaining traction. Videos showing hand and finger ...

But does failing at intricate finger movements and hand coordination exercises mean you’re cognitively doomed? And can these exercises really ― as the captions claim ― prevent dementia or Alzheimer’s?

Now that you’ve signed up for BrainHQ, congratulations! You’re one step closer to sharpening major parts of your brain, including your memory, attention span, brain speed, and more. But like any gym ...