Question

according to physical activity guidelines for americans 2018, which of the following is a key guideline for safe physical activity?

start being active by engaging in high-intensity activities.

increase physical activity gradually over time to meet key guidelines or health goals.

understand that physical activity does not pose any risk to any person.

avoid regular physical activity when suffering chronic conditions.

Explanation:

• For the first option: Starting with high - intensity activities is not a safe guideline as it can lead to injuries, especially for those new to physical activity.
• For the second option: Gradually increasing physical activity over time is a key safe - practice guideline. It allows the body to adapt and reduces the risk of injury or overexertion.
• For the third option: Physical activity can pose risks (e.g., for people with certain medical conditions or if done improperly), so this statement is incorrect.
• For the fourth option: For many chronic conditions, appropriate physical activity can be beneficial, and avoiding regular physical activity is not a safe or recommended guideline.

Answer:

B. Increase physical activity gradually over time to meet key guidelines or health goals.