djett, yoga, especially, and some pilates moves, too, can strengthen your muscles. But it doesn't really count as strength training, because it doesn't really strengthen them as much as lifting weights and other exercise will. Does that make sense? I know after I do my 40th downward dog position in an hour class, my arms are killing me! But I think it might have something to do, also, with the fact that you aren't actually moving the muscle (flexing and extending) while bearing weight. Does that make sense?

This might be a good question to post in the Exercise forum!
That said, definitely keep up both activities...they help so much with posture, flexibility, core strength, and ab muscle use. There are several videos that can help you do strength training at home. You can use dumbells, resistance bands, or even household items, like 2 liter bottles of soda or big cans. Check out the exercise forum for more info, including tons of video recommendations.

I think it's fabulous that you are thinking about this...strength training is essential for good weight loss, I think! The more muscle you build, the more calories you burn (and the better you feel!).