Asana and the Udāna Vayu: Working with The Ascending Force

What Are Vayus?

If yogis can reverse the direction of Prana and Apana so don't they carry Samana and other Vayus with them while travelling upwards and downwards? - Quora

Prana from the ayurvedic point of view - Surya World

Breath of Life - Himalayan Institute

Vyana and Udana Vayu: Functions, Imbalance Signs and How to Balance - Fitsri Yoga

Samana Vayu: The Balancing Energy & How to Access It

What Are Vayus?

Asana and the Udāna Vayu: Working with The Ascending Force – Himalayan Institute Online

Energy Anatomy Archives - Rudra Meditation

Panch Pran: The Five Vital Energies in Yoga

The 5 Prana Vayus in Yoga: Udana

Massage and Yoga by Rachel

Prana Vayus - Udana Vayu Meditation