During pregnancy, which rating scale best describes light to moderate intensity exercise?

• A. 2-3 on the scale
• B. 5-6 on the scale
• C. 7-8 on the scale
• D. 9-10 on the scale

Answer: (B)

During pregnancy, using a rating of perceived exertion to gauge intensity is a practical and reliable way to stay safe and effective, because physiological changes can make heart-rate targets less predictable. The middle range on a 0-10 exertion scale—around five to six—best describes light to moderate intensity. This level means you’re exercising with a noticeable effort, but you can still carry on a conversation in short phrases and sustain the activity without becoming overly breathless. It helps you achieve the benefits of activity while reducing risks of overexertion or overheating, which are especially important during pregnancy.

Choosing the lower end, like two to three, would be too light to provide meaningful cardiovascular benefit for most people who are already pregnant or cleared for exercise. Pushing toward seven to eight or nine to ten would be closer to vigorous or maximal effort, which is generally not recommended for routine prenatal fitness unless guided by a clinician.