It's been a long time since I've had a regular exercise routine. Any tips on where to begin?

What are some good ways to stay in shape when it's too cold to exercise outdoors? Joining a gym is so expensive. Are there any alternatives?

Can you learn Pilates from a DVD? I'd like to learn it, but classes are expensive, especially for lessons offered on Pilates equipment.

During the winter, do you burn more calories exercising outside than you do when exercising inside? Or does air temperature not play a role?

I'm trying to lose weight. What are the best exercises for burning calories?

I'm going skiing for the first time next month. I work out on the weight machines at the gym once or twice a week. Are there other exercises I should do to prepare?

If I miss more than a few days of exercising, I get really sore following my first workout back. Any tips that can help me avoid this?

What exercises can I do to achieve more defined calf muscles? I've always wanted calves like a soccer player but never was much good at sports.

I was recently given a large stability ball to use for fitness improvement. What are some good exercises I can do with it?

My new apartment building has a small gym with a treadmill, an upright stationary bike and a recumbent stationary bike. As someone who is new to exercise and in my 50s, should I choose one over the other?