The Red Arrows

The population of Swanage swelled to thousands today as it was the Carnival, which was really good , followed by a fantastic air display by The Red Arrows at 5.30.
When it finished at 6pm I drove Kate back to Wareham to get the train home to London. Needless to say the traffic was terrible and a 25 minute journey took1 hour and 20 minutes and she missed her train by four minutes. Luckily there was a bar by the station so we had a lemonade and waited for the next train an hour later- by the time she reaches home on the night bus it will be 12.30am .
Still, it's been a lovely weekend and she enjoyed all the fresh sea air and quite a lot of food and beer .:-)
Why does the sea air make one feel so tired?