When I was overseas in the tropics you learned one lesson... never take a nap under a coconut tree especially the really tall ones.
I guess it applies to iguanas as well... one of them natural laws.
Was sitting under a coconut tree on a tropical pacific beach once, coconut landed beside would have split my head open. My country place has a ton of iguanas, they fall out of trees a lot.
Keith Richards apparently never got the lesson about not climbing the coconut tree.