1 An utterance is a natural unit of speech bounded by breaths or pauses. 2  An utterance is a complete unit of talk, bounded by the speaker 's silence.
The best time to do flexibility exercises is when your muscles are already warm so they can stretch farther without tightness or pain. If youâre doing only stretching exercises, warm up with a few minutes of easy walking first to warm up your muscles.
Weegy: You should hold a stretch for 10-30 seconds. Expert answered|Wallet.ro|Points 98136|. User: Which one of the following statements about proprioceptive neuromuscular facilitation (PNF) is most accurate? A. It is the most common and practical type of stretching.