To determine the approximate number of minutes a person should spend stretching before participating in physical activities, we should consider the typical recommendations from health and fitness experts. The usual advice for stretching duration generally falls within a range that is sufficient to prepare the body without causing unnecessary fatigue or taking up too much time.
Among the given options:
- 10 minutes may be slightly on the lower side for a thorough warm-up, especially for more intense activities.
- 15 minutes is often considered a reasonable and sufficient duration for an effective warm-up routine to ensure muscles are properly prepared and to reduce the risk of injury.
- 30 minutes would be quite extensive and may not be necessary for most individuals unless preparing for a very high-intensity or prolonged physical activity.
- 60 minutes is overly long for a warm-up stretching routine and might be more fitting for an extended flexibility session rather than a pre-activity stretch.
Based on these considerations, the most recommended duration for stretching before physical activities is 15 minutes.
Therefore, the correct answer is:
O 15