Yoga is a form of exercise that can positive spiritual health benefits

That is true! Yoga is slow paced and very calming for many people, making it much easier to connect to your spiritual health. Yoga can also connect you to yourself. You might be thinking, well how am I going to connect while im already me? Well, thats where I come in and help out!
Sometimes in daily life we are rushing through things not taking the time to process the things that are happening. We many ignore our emotions or the situation. 
Taking time for yourself, meditation and relaxing, can help you connect to yourself and realize what going on, how are you feeling, and just let the moment pass by, relaxing, and letting your thoughts leave and pass through your mind, as if its a bubble. 
I hope this answers your question!