Day 1 addresses core strength & spinal stability, 2 things that are the foundation for you to feel confident in any yoga practice or any athletic activity at all. If you don't have core strength or your spine doesn't feel stable you're going to feel wonky on your mat.
Balance plays a huge role in yoga, whether you're still a beginner or you're moving on to more advanced poses, you'll need to strengthen those muscles and learn to balance correctly to really boost your practice
Day 5 is all about opening those hips! These safe and effective stretches should be done daily to really open up those muscles. These stretches are great for helping you achieve your splits and generally helping boost your yoga practice
Day 12 is all about working towards the wheel pose. Like all challenges this isn't a one and done type of challenge. These stretches are going to need to be worked on and practiced til you can achieve wheel pose safely