Sport is a great way to keep fit. It's a stress reliever.
My mum and I do cardio kickboxing classes together.
Jumping on the trampoline for even a half an hour is a really good workout. You get really tired. The next day, you're feeling it. And you really have to use your core. If you don't, your lower back hurts the next day.
I started mountain-bike riding two years ago, which is much better than riding a stationary bike in the gym. Mountain biking is a total body workout.
I was introduced to spinning. It was so intense! It's the hardest workout you've ever done, and afterwards you feel amazing.
Yoga is a great thing to do because you can just practice it by yourself in your hotel.
I believe it's extremely important to include some other type of fitness activity in your training, so cross training will help you to avoid injury when you are dancing.
Cycling as a whole is totally underestimated.
I have to wear two sports bras when I do my cardio. It takes a lot to hold these puppies up!