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Active Isolated Stretching (AIS) is a series of short, controlled stretching technique developed by Aaron L. Mattes. It is a manual technique that combines both strengthening and stretching. This set of technique differs from the conventional passive and static stretching, as it involves the use of reciprocal inhibition -  a neuromuscular reflex whereby the contraction of a muscle, allows the opposite to relax. 

Through AIS, one can achieve a new range of motion and at the same time, develop muscular control. This technique is highly adopted by elite athletes as a pre-activity for muscular activation and mobilization. It is also utilised during post-activity to promote blood flow into the targeted muscles for better recovery.

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