Thanks for the extra tips! Little Ninja - I can't believe I didn't think of bicarb before, I always have a small bowl full in the fridge.
Nessie - those trainer balls are such a bargain! I might buy some as little stocking fillers for my friends (although they might wonder if I'm trying to tell them something)
Tom - I will trial the coffee sock after my next boxing class. I love the smell of ground coffee!
A few weeks ago, I made a DIY heatpack by sticking a (bright green) cotton sock filled with oats in the microwave. My boss came in as I was heating it up and said "I'm almost afraid to ask, but is this some kind of new diet thing?" I can't wait to find out what he thinks of the coffee socks!