Yin & Yang yoga classes combine a yang practice (with movement) and a yin practice (passive, more calm).
The yang sequence flows softly combining different asanas through conscious breathing which provides heat, openness and presence.
The yin practice is passive, postures are held for a longer period of time allowing the body to surrender and giving time to release the tension in the deepest tissues of the body. In this practice we use blankets, blocks and different props to help the body surrender more deeply into the posture.
Hatha Vinyasa yoga combines conscious breathing, fluidity and stillness, physical and energy alignment, and a focused mind.
Conscious breathing provides presence, energy and health. The heat and the flow provide mobility, strength, flexibility and purification. Stillness brings awareness, mental stilness and benefits the deepest body systems (nervous, circulatory, endocrine, etc.). The principles of physical alignment provide integrity in the asanas, health and energy movement in the body. A focused mind allows us to bring the gaze inward, expand consciousness and come closer to a peaceful state of mind.
The passive part of the practice (YIN) lets the muscles relaxed to stimulate tissues such as fascias, tendons, ligaments, bones and articulations (the connective tissue). The Yin practice expands the range of movements of this type of tissues which normally get rigid due to aging. The practice can also be intense, as you may have to maintain the same posture for 5 minutes. This stimulates the internal vital energy, it calms the central nervous system and teaches you how to relax on the deeper level. All this prepares the body and the mind to enter in the state of meditation.