Final answer:
Assisted stretching involves using a stretching machine or a friend's help, which is part of a safe exercise routine when preceded by a proper warm-up to prevent injuries such as pulled tendons.
Step-by-step explanation:
When using a stretching machine or the assistance of a friend for stretching, it's considered a form of assisted stretching. This type of stretching is beneficial as it can help you hold stretches at an optimal position and for the appropriate amount of time.
Warming up the muscles before engaging in stretching exercises is crucial. A proper warm-up increases blood flow and readies the muscles for the stretches to come, thereby reducing the risk of injury. It helps prevent pulling a tendon, which can result in pain, swelling, and limited mobility. To ensure a safe and effective exercise routine, incorporating a thoughtful warm-up followed by an assisted stretching session is highly recommended.