Garden hoses help explain why mammals can maintain stiff erections

Mammals are able to maintain stiff erections because their penises have a rare form of internal reinforcement. Now, a discovery inspired by playing with a garden hose means we finally understand the extent of the benefits this offers.

“It was a pandemic lockdown issue,” says Peter Palffy-Muhoray, a physicist at Kent State University in Ohio who normally studies liquid crystals. “While out in the back yard, we noticed the funny undulations of a hose, and wondered about it. Then we stumbled on the amazing biological parallel. Of course, how can one resist a puzzle involving penises?”

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