Pool and gym 5 mins from my house in same building.
Pros for gym:
Will burn 600 calories which will make up for booze and sausages last night
Can get there at 4.30pm and collect kids from CM on way home
Pros for swim:
Need to train as have triathlon in 2 weeks and haven't swum for ages (but can easily do distance I think)
Please decide for me.
Ta.