Living Forever: Will It Ever Be Possible?
Sidenote by AsapSCIENCE
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Playing With Gargaleesis
Nismesis is light feathery touch, gargaleesis is the rhythmic. And it's also seen across all different types of mammals. The laughter signals to the partner that like the touch is OK. They think this type of tickling in play is important for muscle development and stress relief.
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