Vale grew up so much in only one long weekend. His grandma left him on Thursday with only one tooth poking out of his gum and found him on Tuesday with two teeth, able to crawl quite professionally (until then he was only sliding on his belly), able to clap his hands intentionally, and also making sounds with his tongue like horses steps...
Of course, taking him to the beach might have helped. We rented a house on Topsail Island and went with friends and their babies. After a cold week in Charlotte, we had gorgeous weather at the ocean. We took long walks on the beach, and stayed under the canopy all day long. Valentin would usually fall into deep sleep the moment the stroller hit the sand. Martin would wade in the water or play football with papi or would help him make sand castles (yes, Martin was only helping papi, who was very serious and concentrated on the job).
When it was Martin's turn to sleep, Vale would be awake. He discovered sand, but only with his feet - as I had learned my lesson that sand tends to sticks to baby hands oiled with sun-block and baby hands tend to find their way to baby mouth and baby eyes very quickly... Thanks to guinea-pig Martin!