When practicing mindfulness in a more active form, bring your awareness into the sensations of your body and notice and release thoughts or feelings as they appear.
How to Practice Yoga
Join a yoga class in person or online. Remember to listen to your body and move within your limits. I love Yoga with Adriene on Youtube.
Notice the sensations in your body exactly as they are in each moment. Notice when your mind wanders, acknowledge and label the wandering as a "thought" or "feeling" and invite your awareness back into your body.
Explore different types of yoga and find what you prefer.