Does using a "Pilates' Reformer" count as strength training? Also, what about Yoga? They are both relaxing and reduce stress for me, but I don't know how you would "count" this.

I'm not familiar with the Pilates' Reformer, and there are many different types of yoga. But I can give you some general guidance. Strength training on the Strong Women program involves a movement that works your muscles to fatigue after about 8 to 10 repetitions. This means that if you do the move 8 to 10 times, you need to stop and rest before you can continue. That's what makes you stronger. If you're using your Pilates' Reformer this way, then it counts as strength training.

Some forms of yoga provide some strengthening benefit. You can tell by how your muscles feel. If the pose is challenging enough so that you can hold it for only a minute before you need to rest, and if you feel the burn of muscle fatigue, then probably you're getting some strengthening effect. However, it's not likely to be as great as with the strength training exercises in my books.

Remember that you're enjoying other important benefits from these exercises - relaxation, reduced stress, and increased flexibility and coordination. They're a valuable addition to your overall health and fitness.