The Wii Fit Plus contains six new and challenging strength and yoga activities.You can now personalize your own routine. You can choose to do them in the order they are presented, or combine them in whatever order you want. You have the ability to repeat the ones you like, maximizing attention and effort where it is needed most. You also have the ability to take out unnecessary interludes between exercises, making for a continuous, time saving routine.
You can combine the Yoga and Strength Training exercises with the Wii Fit U, here are the Yoga Activities that are included in the Wii Fit U. Deep Breathing, Triangle, Gate, Chair, Spine Extension, Warrior, Dance, Half Moon, Downward Facing Dog, Grounded V, Sun Salutation, Bridge, Tree, Cobra, Palm Tree, Shoulder Stand, Standing Knee and Spinal Twist.
But
the poses and instruction are greatly enhanced over the original Wii
Fit, you can view the trainer's body with a 360 degree view to ensure
that you're matching it precisely.With the Wii Fit U w/Wii Balance Board accessory and Fit Meter - Wii U
you can create your own personalized workout routine with Yoga,
Strength exercises, and other activities or select from recommended
routines based on your fitness goals.You have the option of viewing your own video image next to the trainer's using the GamePad camera (it doesn't automatically detect whether you're precisely matching the trainer, but you can eyeball whether you are easily enough).
The Yoga poses are traditional ones like "half moon", "downward facing dog", etc. 15 of them are the same as in the original Wii Fit Plus, while 3 are new ones
Another Wii U Yoga game available is Your Shape and Fitness Evolved 2013. there are several yoga classes included.
The Zen Yoga class is perfect if you just feel like relaxing or after a
workout you need time to cool down and relax.The Zen Yoga class allows
your energy flow to increase and the better you move the more beautiful
the environment is.There are 6 yoga classes in total.With Your Shape: Fitness Evolved 2013 - Nintendo Wii U
, you get your own personal trainer and work at your own level in the comfort of your own home.
There are 6 Wii U Yoga classes available in Your Shape and Fitness
Evolved 2013, but there are also 129 different fitness workouts,
depending on what part of the body you want to tone, you can select the
workout for your abs, back, arms or legs. all the workouts have been
designed by top fitness instructors.The classes are fun but effective and the instruction is great. You will love the way you can customize your workout to your fitness level.
The NewU Mind Body Yoga & Pilates Workout combines two of the most
popular and rewarding fitness methods in one exercise program in order
to help meet your specific exercise goals.
Whether it's trimming up your
waistline, developing your body strength, improving your posture or
overall fitness, NewU Mind Body Yoga & Pilates Workout takes your
specific fitness goals in mind and customizes a set of exercises
specifically to target your needs. 
With over 115 different exercises
demonstrated and led by live action videos of real fitness trainers,
NewU Mind Body Yoga & Pilates Workout brings you the intense yoga
& pilates training you'd expect from a serious exercise program
complemented by real-time feedback and precise motion tracking utilizing
Wii MotionPlus and the Wii Balance Board. 
I found I got a challenging workout that incorporated sun salutations,
strength flows, deep twists and balancing poses - after working out I
felt muscle fatigue; as though I had really been through a good yoga
workout! If you are looking for something deeply traditional then this
might not be for you, but if you are looking for a really good,
effective yoga workout that you can change as your goals change, then
this is it! It is fun, challenging and keeps you interested!