This indicates the number of push-ups an average person should perform based on their age.
According to the Mayo Clinic, these are the recommended push-up levels by age:
25 years-old - 20 (women); 28 (men)
35 years-old - 19 (women) 21 (men)
45 years-old - 14 (women) 16 (men)
55 years-old - 10 (women) 12 (men)
65 years-old - 10 (women) 10 (men)
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