On a sunny day, why not have a go at a more wobbly style of yoga and swap your yoga mat for a stand-up paddle board. Paddle board clubs at both Lake Starnberg (pictured) and on the river Pegnitz offer this activity. Paddle-board yoga strengthens your core. And despite the aching muscles, you'll be sure to think back fondly to your exciting escapade for several days. What's more, if your sense of balance happens to be a bit off that day, at least you'll have a soft landing.