¿Por qué se celebra el Día Mundial del cerebro?

#iguru_soc_icon_wrap_6721df4df3cfe a{ background: transparent; }#iguru_soc_icon_wrap_6721df4df3cfe a:hover{ background: transparent; border-color: #2c8fa0; }#iguru_soc_icon_wrap_6721df4df3cfe a{ color: #2c8fa0; }#iguru_soc_icon_wrap_6721df4df3cfe a:hover{ color: #ffffff; }.iguru_module_social #soc_icon_6721df4df3d691{ color: #ffffff; }.iguru_module_social #soc_icon_6721df4df3d691:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6721df4df3d691{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3d691:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3da12{ color: #ffffff; }.iguru_module_social #soc_icon_6721df4df3da12:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6721df4df3da12{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3da12:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3def3{ color: #ffffff; }.iguru_module_social #soc_icon_6721df4df3def3:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6721df4df3def3{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3def3:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3e054{ color: #ffffff; }.iguru_module_social #soc_icon_6721df4df3e054:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6721df4df3e054{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3e054:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3e195{ color: #ffffff; }.iguru_module_social #soc_icon_6721df4df3e195:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6721df4df3e195{ background: rgba(44,143,160,0.01); }.iguru_module_social #soc_icon_6721df4df3e195:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6721df4df3e2d6{ color: #ffffff; }.iguru_module_social #soc_icon_6721df4df3e2d6:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6721df4df3e2d6{ background: rgba(44,143,160,0.01); }.iguru_module_social #soc_icon_6721df4df3e2d6:hover{ background: rgba(255,255,255,0.01); }