Use reasoning to lead to the answer of the following question:
Before lifting weights he liked to warm up on the squash court, he really enjoyed the facilities of the what?\nOptions:\n- swimming pool\n- rich person's house\n- country club\n- fitness center\n- park
 Reasoning process:
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At fitness center, a person can do weight lifting and other exercises. Before lifting weights he liked to warm up on the squash court as he really enjoyed the facilities of the fitness center. Therefore, the final answer is fitness center.
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