They can. Any activity done in mindfulness can be considered meditation. Yoga, tai chi, and similar mindful movement activities are particularly conducive to this. Whenever we are not standing, sitting, or lying down, we are moving. We can learn to move and walk with awareness. We can be aware of the contact of our feet with the earth and of our in-breath and out-breath. As we breathe in, we can say "in," and as we breathe out, we can say "out" silently. We are aware that we are alive with each step, not carried away by our thoughts and emotions.  WebMD Tai Chi for medical conditions says: The ancient Chinese practices of tai chi and qigong (pronounced CHEE-gong) combine slow, deliberate movements, meditation, and breathing exercises. It began as a martial art. As it developed, it took on the purpose of enhancing physical and mental health. Practiced in a variety of styles, tai chi involves slow, gentle movements, deep breathing, and meditation. The meditation is sometimes called "moving meditation."