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.
Stretching should be performed a minimum of three days a week for 5-10 minutes at a time. For maximum effectiveness you can stretch 5-7 days per week.Perform 1-2 sets per muscle group. Focus on muscles that are particularly tight. Muscles that are most often tight include the calves, hamstrings, hip flexors, latissimus dorsi (large back muscle) and chest.or maximum effectiveness you can stretch 5-7 days per week. Perform 1-2 sets per muscle group. Focus on muscles that are particularly tight. Muscles that are most often tight include the calves, hamstrings, hip flexors, latissimus dorsi (large back muscle) and chest.