A client with whom you have been training for 10 weeks retakes a submaximal exercise test and finds that his heart rate is lower at each stage (workload) of the test. He is bothered by this because he thought his heart would be stronger and beat more times per minute. Brainstorm an easy-to-understand explanation to help him understand what is going on. How would you respond?
I would explain that, counterintuitively, the stronger your heart is, the less you can expect it to beat (lower heart rate). To explain it simply, his heart is more efficient; being able to pump the necessary amount of oxygen into his body without contracting as many times as before, i.e. the muscles of his heart are stronger. He can relax because his lower heart rate means he has better cardiovascular health now!
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
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Answer the following query.
A client with whom you have been training for 10 weeks retakes a submaximal exercise test and finds that his heart rate is lower at each stage (workload) of the test. He is bothered by this because he thought his heart would be stronger and beat more times per minute. Brainstorm an easy-to-understand explanation to help him understand what is going on. How would you respond?

user
I would explain that, counterintuitively, the stronger your heart is, the less you can expect it to beat (lower heart rate). To explain it simply, his heart is more efficient; being able to pump the necessary amount of oxygen into his body without contracting as many times as before, i.e. the muscles of his heart are stronger. He can relax because his lower heart rate means he has better cardiovascular health now!
assistant