stimulation

The microscopic algae have an extremely fast response to stimuli — such as breaking waves — and produce their glow 15 milliseconds after stimulation, researchers say.

But when they found they could only have stimulation drugs on the NHS, she says she turned to her mum and asked, "What do we do?"

Thankfully, the dramatic coastal bluffs of the Palos Verdes Peninsula provide visual stimulation for the long hikes — plus, those Instagram-worthy photos and the breezes to savor.

“It’s a lot. There’s a lot of visual stimulation.”

“Mental stimulation can be just as tiring as physical exercise,” says Jae.