RAS aka Recovery Adaptive Strategies are passive and active means to help decay fatigue and improve your recovery.
The most important aspects of recovery are training within your volume landmarks, proper sleep and eating enough, but these other RAS can be utilized during Deloads, Tapers or unique circumstances of particularly low readiness, to help you boost your recovery.
Some of our favorite RAS are Ice Baths and Contrast Baths/Showers.