I am always looking for new, non-gym needed workouts to challenge myself and keep exercise interesting. I found the Nike Training Club app and its 15 minute blaster workouts are great. The biggest thing to consider is modification. I know that I can’t safely hold some of the positions, especially planks for the required time. So I modify gently while still getting the benefits. I love that you can pause the workouts to view proper techniques, very cool. My back, arms, and abs are happy with soreness.
http://www.nike.com/nikewomen/features/ntc?locale=en_GB
I highly recommend it!!!
RunSingTeach 