After a bit of thought, we realised that he was obviously going through a new developmental stage, one that was all about physical energy and coordination. Indeed, he is now a whizz at the assault course in the park, and although he still runs like a 14 month old (it's really funny - he looks ridiculous!), he's started to get much better at changing direction quickly.
So this morning Ian invented a new game - Nathaniel Gym. He turned on loud 70s rock (nothing like over-stimulation to wear out a toddler), and then romped around the living room for 90 minutes until Ian couldn't stand up!
The pictures are rather blurry - there wasn't a lot of staying still!
Everyone had a good nap!